App store monopoly and monopsony status is a seperate (albeit related) problem from app stores having no or shitty quality control. If a non-monop'y app store wants to control peoples' business... well, they can't; people will just use a different app store; that's the point.

It's a tough problem. Unconstrained market is a cesspool. Somebody needs to set some limits - the question is, who and what.