When talking about textmarks the reason is probably: Designers do not usually get to pick the name. Therefore the palindromic/mirror and or rotationally symmetric quality of the logo is up to chance. While you can manipulate the situation a bit, conditions leading to this kind of feature are quite rare. At least if you intend to avoid hard to read combinations.

Also being able to spot the possibility is also somewhat up to chance. Some people are naturally much better at spotting this spatial possibility.

And last but not least not all designers and/or clients see value in this. Sacraficing leglibility to a gimic is not nesseserily worth it.

When talking about textmarks the reason is probably: Designers do not usually get to pick the name. Therefore the palindromic/mirror and or rotationally symmetric quality of the logo is up to chance. While you can manipulate the situation a bit, conditions leading to this kind of feature are quite rare. At least if you intend to avoid hard to read combinations.

Also being able to spot the possibility is also somewhat up to chance. Some people are naturally much better at spotting this spatial possibility.

And last but not least not all designers and/or clients see value in this. Sacrificing legibility to a gimmick is not necessarily worth it.