The MLS/Apple deal
hasn't gone well for either of them. The sort of 'gatekeeper' deal of everything under one roof doesn't look that good right now. At least, there's more risk to it than maybe the leagues had thought.
On cable, there's NHL Center Ice, which is the out-of-market, non-national games, so they'd pretty much already be set up to do that kind of thing.
Ideally, they would get rid of the blackouts, but if cable TV is in a death spiral, only being held together by live sports, then it only makes sense for the NHL to get every dollar out of that before the industry falls apart.
The leagues/broadcasters have to go where the people are, and there isn't any one clear avenue for that right now. IMO, YouTube is probably the best overall option right now.
The NHL does need to figure out how to get NHLN onto Peacock, however. NBCU is already partial owners of NHLN, so that would be its natural home.
An end state could be free OTA TV games, some kind of FAST service, and/or YouTube carrying local games for free (ad supported), and an additional ESPN+ type out-of-market package.
Once a team takes over their local rights, I don't see why they have to only put the games on one website. If they just want raw viewership for an already free broadcast, then put it on YouTube, Tubi, Roku, etc. at the same time. They can sell separate ads on each of them, and people can randomly stumble onto the games again, like in the channel surfing days.