Still not sure if that means local blackouts and another provider handling in-market broadcasts / streams.
No local blackouts for mlb-produced games. So assuming that Nats get on board with this for '26, you'll be able to watch them on mlb.tv without any blackout.
The concept of a service region is going to disappear, I remember Tyrannosaurus Angelos going on about his territory from "Pennsylvania to North Carolina", even though there weren't many O's fans south of Richmond. Actual consumer choice, not arbitrary league mandate will ultimately determine who watches what.
The other thing that will end is the needless switching. To watch the Giants I need to exit out of mlb.tv, and go into YouTubeTV to get NBC Sports BayArea, whether on my laptop or TV, just like you've had to do with MASN. This type of move will still be a thing for 23 teams in '26, but could be gone soon. Good to see baseball moving away from the old, creaky and impractical cable TV distribution model.