Yeah, but one could argue by making updates to the game they're destroying the experience of the old game, taking it away from me. I see little difference in the argument about the "original" Overwatch servers getting migrated to Overwatch 2 and them releasing updates which would ultimately make older versions effectively unplayable (no players).
Like cool, you've now put the force of law into making them continue to manage old versions, versions that practically nobody plays on. By adding a single new character they've now changed the game, and if you didn't like that addition, it's an unplayable game even if you had the option to not update. This is fundamentally the same as Overwatch getting shut down (the old version becomes effectively unplayable).
If anything, they shouldn't be legally allowed to modify the game at all, because making a modification to it makes the original effectively unplayable because there'd be effectively no player base. Or maybe they should be allowed to make updates to their game platform...
If the release of Overwatch 2 was effectively taking Overwatch away from the people who paid for it, every update to the game was effectively taking away that edition of Overwatch from people. But people didn't care until the launcher got updated to say "Overwatch 2", suddenly now that's a travesty and Blizzard is somehow taking it away.
I got Overwatch on release day. I still can play Overwatch today. I don't get why one would say they took it away from people unless you agree every update to the game is taking the old game away from people.