Most designers happen to serve mostly common customers but there are countless highly used industry specific web applications out there that are navigated primarily by shortcuts, and that software too, has designers. Designers that from my experience are often trying to make B2B, high data density solutions into fluffy UIs despite clear feedback that it's not what users want.

It depends who that common customer is. If you're building a tool for industry and your users are electrical engineers, you would design it differently to a consumer mobile app is all I am saying.