Apple’s App Store design is a big part of the problem. The dominance and prominence of “top lists” stratifies the top 0.02% so far above everyone else that the entire ecosystem is encouraged to design for a theoretical top-list placement that, by definition, won’t happen to 99.98% of them. Top lists reward apps that get people to download them, regardless of quality or long-term use, so that’s what most developers optimize for. Profits at the top are so massive that the promise alone attracts vast floods of spam, sleaziness, clones, and ripoffs.
Quality, sustainability, and updates are almost irrelevant to App Store success and usually aren’t rewarded as much as we think they should be, and that’s mostly the fault of Apple’s lazy reliance on top lists instead of more editorial selections and better search.
The best thing Apple could do to increase the quality of apps is remove every top list from the App Store.