There’s only one store that matters. They have unthreatened supermajority marketshare. Customers go there by default - sometimes exclusively. Developers can sell there, or they’re basically fucked.
What you’re concerned about are anti-competitive practices. But some businesses don’t need those, to lack any relevant competition. It can just happen. They didn’t do anything wrong. They’re still monopolies.
None of that is what defines a monopoly.
There’s only one store that matters. They have unthreatened supermajority marketshare. Customers go there by default - sometimes exclusively. Developers can sell there, or they’re basically fucked.
What you’re concerned about are anti-competitive practices. But some businesses don’t need those, to lack any relevant competition. It can just happen. They didn’t do anything wrong. They’re still monopolies.