They will not if Tidal thinks they can control the UI of other developer's applications. I don't know the details, but I don't think the disagreement was minor. I think Tidal was asking for essentially veto power over the look and feel of MC's UI.
Tidal's desktop app is really a mess too ... I know nada about what went on behind the scenes of course but if they are like Qobuz, they want MONEY too. Why they are in bed with "hardware" sellers like sonos, popcorn etc.
Its been a long time, before even Mr C worked on ALLMusic scraping, that I thought metadata control or access is where its at. I would think that all that would be needed (other than a way to insure that people couldn't hack into their service for free of course, is to be able to associate a URL from tidal to a record in the library. Of course not that simple for the backend but, it would cost them next to nothing and gain them clients and I can think of some ancillary revenues they could make too.
I'll only pay for a month (for vacations) then I cancel. If I could associate all my current library I would have fast cloud storage for free. That would be worth it to pay on a monthly basis for lots of people with large collections.
O.T. The downside of this streaming stuff is that people are going to spend a lot less money that would go to individual artists and that bums me out. (I know, I know there are plenty of counter arguments), So Sony gets replaced by the Jay-Z Corp.