I'll be honest -- I don't believe you when you say you can tell the difference. Nothing personal but human ears are just usually not good enough to manage this.
But even that aside, my point stands that most people don't care and Apple just doesn't care to poach however few people are on tidal lossless. Until lossless listeners became a sizable minority, they will continue to be ignored.
I don't know where you're getting your numbers about audiophilia but most of that gear is crazy overpriced so it doesn't reflect as large an audience as you suggest. Again, most people listen to music on computer and phone speakers; not high end speakers.
You are wrong once again.
I'm a musician and I have precise ears. I can hear every little detail from cymbal hits to low drum kicks, breaths in vocals, etc. I've trained my ears over the years. It's a natural talent.
You're telling me cinematographers, filmmakers, sound designers, graphic designers, can't tell the difference between details? Sure I'm in the minority, but when you say I can't tell the difference that is an insane statement.
I have pretty "decent" gear, tube amps and headphones that total to about $2000, which is by no means even the highest end of whats out there, but I can tell the difference between 320kbps MP3, 256kbps, FLAC (44/16) and 24/96. Easy. I can tell the difference between a badly mastered album and a good mastered album.
These "super deluxe" versions of albums are pretty terrible. I have all the Beatles albums Flac in Mono and Stereo, I prefer Mono because that's the way they recorded a lot of it. I don't like the Apple remasters.
Music for me is so personal as it is to a lot of people, more personal than movies and any other art form, that if I put on an album and listen on my gear, I want to be in a silent room and imagine I'm in the room that these musicians played in.
If I'm mobile, I don't really mind lower quality audio. 256kbps is fine in my car or when I walk. I do have FLAC albums on my iPhone though, and I still can tell the difference in my car, but I'm not as picky when I'm mobile.
I honestly liked Tidal's HiFi audio, but I just didn't want to pay money for it. $20/month for what? I can just rip my own albums or buy from HDTracks. Also Tidal's HiFi albums, some of them, didn't sound good at all. They sounded like bad rips.
But like I said I'm in the minority, however there are millions of people like me out there.