Hey J
Most of the indie scene is releasing both on vinyl and digital. Alot of the older groups such as Zep, Stones, Kinks, etc are releasing their anthology on new vinyl after having it remastered. The biggest selling new album last year or year before was Radiohead..and they have been around for a very long time. The number of artists releasing on vinyl is more than very few.
However, saying all that, I think too that its a niche market. How big this niche will become only time can tell. I also think that there enough turntable manufacturers out there to choose from. Technics jumped back into the frey when they rereleased/upgraded its much vaulted SL1200 and are asking a crazy price of 4K which its definitely not worth IHO. Yamaha manages its money better than most of the Japanese companies. My quess is that Yamaha is very aware of the growth in vinyl and are keeping their eyes open to see if and when it will enter the market.
I would also like to point out that every age group is experimenting with vinyl, not just hipsters. It spans multiple generations.
Have a good one.