I think it is characteristic to the American entrepreneurship culture to "reuse" success stories. The public likes your blockbuster? Make a sequel or even a shameless copy. It will yield less profit than the original obviously, but may prove to be more profitable than some new untested experimental idea.

I don't think the logos in this article have anything specifically American in them, it's just the reuse culture. First time you see a logo of a real estate agnecy with a nice abstract roof you say "wow, this is cool". In the US it means it will be copied a thousand times until it starts annoying everyone. Then it's time for a new "wow" idea.