[fendy3002]

It happens to almost anything creative products, stylish, custom made, and services.

I guess because there isn't enough time and money to assess the quality and optimize them.

[CRConrad]

I think it's more that you just simply can get away with it: Artsy-fartsy types that care more about design care less about function and quality, so don't question and check them enough for manufacturers to have to keep high standards in those areas.