So many questions about MQA and hi-resolution audio. I hope we don't spend all of our time on audio format details, but it's an AMA and you're asking.
TIDAL has cared about high quality and even experimental audio formats long before it was cool or common among music streamers. Why? Because artists take care when making their art and they want/hope to present their work in the best light (whatever they think that is exactly). We also live in a world that is mobile-dominated and mobile phones have constraints in memory, data plans, coverage maps - so there's always a consideration for the customer's need between more quality and more bandwidth/storage efficiency.
Breaking news for my reddit peeps: we will be introducing hi-res FLAC for our HiFi Plus subscribers soon. It's lossless and an open standard. It's a big file, but we'll give you controls to dial this up and down based on what's going on.
Tidal CEO says hi-res lossless is coming, raising doubts about MQA - Digital Trends