Agree !
But for a different benefit, "App Discovery".
I've been referring to these as "App Discovery" App Stores.
In the docs for the $100M USD settlement agreement that Apple recently agreed to, they even expand on that to discuss (paraphrasing here) "domain specific" App Stores ... i.e., boutique OR specialty App Stores !
I had NOT thought about it in that way, but they are dead on with their point !
Think of it this way, outside of Apple's App Store, there could be 30-50 other App Stores, each focused on a different Application OR type of Applications.
I had been thinking of it in terms of 10 other App Stores in each major country, each with the same content, & each competing for the best apps to recommend OR promote, much like how Pro Sports works here in the States & elsewhere, where Top Talent is Paid BIG Bucks (to join sides) !
So, how about both ???
Would be much better than the Status Quo, where Apple can literally Bully ANY App Developer they want to !
Along that line, when it comes to App Developers, Tim Cook's Apple is really NOT that much different than how Trump controls, OR tries to control, Republicans in Congress !
Just like with Republicans in Congress, few App Developers have been willing to speak up.
But for both cases, their influence in diminishing & a Sea of Change is about to occur

!
Also, just like Trump, Cook's Apple appears to have the exact same level of insecurity.
Trump does what he does because he is Heartless.
Tim Cook is insecure for some other reason; I suspect it's because he is In Over His Head (probably because of his background, Manufacturing Operations), & he simply doesn't want the world to know that.