The question was thouroughly answered in the comments. I shall try to summarise the points given.

1. @rclocher mentioned that handlebar tape today can be removed easily without much residue. Thus making replacing bars and tape simple. This is contrary to my assumption which was based on limited and outdated experience. The tape is inexpensive for dealers and manufacturers (mentioned by @mattnz)

2. In my question I overestimated the use to cyclists of having bars that differ from the original (@mattnz). The assumption that customers or dealers are willing to replace handlebars seems also unfounded (@mattnz, @batman)

3. A typical fitting session typically includes only saddle height and position, stem spacers, and adjustable stems (@batman). More effort on this would erode the dealers profit margins and the patience of 80% of the customers (@mattnz)

4. A bike without tape would be uncomfortable to test ride (@batman) and would look bad in the showroom (@Criggie). It cannot be compared to bikes without pedals, since attaching pedals is done in a moment, taping however takes time (@batman).

In case I misrepresented someones comment or overlooked it all together, please be so kind to mention it in a comment on this answer. I do have a few questions on some of these point, which I shall also post below.

Than you very much for the very interesting comments, they were informational beyond the initial, somewhat trivial, question.

The question was thouroughly answered in the comments. I shall try to summarise the points given.

1. @rclocher mentioned that handlebar tape today can be removed easily without much residue. Thus making replacing bars and tape simple. This is contrary to my assumption which was based on limited and outdated experience. The tape is inexpensive for dealers and manufacturers (mentioned by @mattnz)

2. In my question I overestimated the use to cyclists of having bars that differ from the original (@mattnz). The assumption that customers or dealers are willing to replace handlebars seems also unfounded (@mattnz, @batman)

3. A typical fitting session typically includes only saddle height and position, stem spacers, and adjustable stems (@batman). More effort on this would erode the dealers profit margins and the patience of 80% of the customers (@mattnz). This is disputed since the typically high value of bikes and possibility to further service the customer is an incentive for the dealer to invest in good fitting (@andy256).

4. A bike without tape would be uncomfortable to test ride (@batman) and would look bad in the showroom (@Criggie). It cannot be compared to bikes without pedals, since attaching pedals is done in a moment, taping however takes time (@batman).

In case I misrepresented someones comment or overlooked it all together, please be so kind to mention it in a comment on this answer. I do have a few questions on some of these point, which I shall also post below.

Than you very much for the very interesting comments, they were informational beyond the initial, somewhat trivial, question.

The question was thouroughly answered in the comments. I shall try to summarise the points given.

1. @rclocher mentioned that handlebar tape today can be removed easily without much residue. Thus making replacing bars and tape simple. This is contrary to my assumption which was based on limited and outdated experience. The tape is inexpensive for dealers and manufacturers (mentioned by @mattnz)

2. In my question I overestimated the use to cyclists of having bars that differ from the original (@mattnz). The assumption that customers or dealers are willing to replace handlebars seems also unfounded (@mattnz, @batman)

3. A typical fitting session typically includes only saddle height and position, stem spacers, and adjustable stems (@batman). More effort on this would erode the dealers profit margins and the patience of 80% of the customers (@mattnz)

4. A bike without tape would be difficult to test ride (@batman) and would look bad in the showroom (@Criggie). It cannot be compared to bikes without pedals, since attaching pedals is done in a moment, taping however takes time (@batman).

In case I misrepresented someones comment or overlooked it all together, please be so kind to mention it in a comment on this answer. I do have a few questions on some of these point, which I shall also post below.

Than you very much for the very interesting comments, they were informational beyond the initial, somewhat trivial, question.

The question was thouroughly answered in the comments. I shall try to summarise the points given.

1. @rclocher mentioned that handlebar tape today can be removed easily without much residue. Thus making replacing bars and tape simple. This is contrary to my assumption which was based on limited and outdated experience. The tape is inexpensive for dealers and manufacturers (mentioned by @mattnz)

2. In my question I overestimated the use to cyclists of having bars that differ from the original (@mattnz). The assumption that customers or dealers are willing to replace handlebars seems also unfounded (@mattnz, @batman)

3. A typical fitting session typically includes only saddle height and position, stem spacers, and adjustable stems (@batman). More effort on this would erode the dealers profit margins and the patience of 80% of the customers (@mattnz)

4. A bike without tape would be uncomfortable to test ride (@batman) and would look bad in the showroom (@Criggie). It cannot be compared to bikes without pedals, since attaching pedals is done in a moment, taping however takes time (@batman).

In case I misrepresented someones comment or overlooked it all together, please be so kind to mention it in a comment on this answer. I do have a few questions on some of these point, which I shall also post below.

Than you very much for the very interesting comments, they were informational beyond the initial, somewhat trivial, question.