My opinion is that MQA never really had a chance because it is a proprietary technology. MQA adds costs and complexity throughout the music/supply chain to play high resolution music when the competition is using a standardized format that is free.
The music streaming market is brutal and the higher resolution part of the market is worse. Time will tell if Tidal is able to survive. I hope that the market changes help Qobuz to survive. I love Roon and Qobuz works great with Roon.