So of the top-tier streaming services, so far:
- Spotify doesn't want to invest in providing lossless audio (much less high-res);
- Apple doesn't want to invest in a broadly-available Connect-type functionality;
- Amazon doesn't want to invest in the user experience.
I think Amazon will have the greatest challenges addressing its problem. Good user experience is just not in their DNA. It's *really* difficult to change culture (and business models, frankly).
Spotify's problem is that it's just not a profitable business, and so far they see no current need to channel cash flow to pull in and retain customers, given their other significant advantages, since lossless appears not to be an important priority for their customer base.
Apple has the cash and culture of competitive innovation that could set up Connect functionality and make the service broadly available to consumers heretofore not Apple customers. I'd be astonished if they haven't been thinking about this, given their recent emphasis on subscriptions and services, though wouldn't be surprised if they don't follow through. But they do have the best and most achievable opportunity of the three, IMHO.