Maybe, but they are not enemies, we don't need more enemies, there's already enough of them.
The other scenario was that Steam and Itch would heroically have said "Fine, go ahead. We care about our customers", then they would have stopped receiving money and in few times both the stores would have collapsed. No earnings for them, no earnings for developers, no games for us. They would just become an online chat? Until the costs of the server, which they would not be able to pay would make expire the domain.
That would be a very harsh strike to worldwide gaming and game developement, considered that nowadays the digital market is the most significant in terms of %, pretty much like restarting from square 1... or 3 (maybe a bit later than the birth of internet? That's a lot years).
But hey, we would have remembered and cried on the graves on 2 valiant heroes: "Steam" and "Itch.io", 2 heroes who died to tell the world that they cannot make them remove a part of their games (the fact that instead 100% of their games disappeared is just one minor detail).
Let's just skip the part in which other stores would take place: same 2 forks scenario (at the current state of things).
You know what? I don't need of heroes, we don't need of heroes, the world doesn't need of heroes: the world needs of us.
If we only see the negative part of it, we'll just hate and go away, without connections we are just individuals, the number is our biggest and probably the only one advantage we have.