There is a lot of use of ProTools in professional studios, but this is mostly for the special effects it allows, not for sound quality. These special effects soon fall out of fashion, and I don't think this trend will define studios permanently.
I grew up listening to all kinds of music, everything from country to rock, pop, R&B and even rap, so for me, music is music and a great song is a great song.
We have a very active testing community which people don't often think about when you have open source.