I hear you, and agree that is true. But consider this angle:

Without buying an ad, but with a competent organic search:

Customer searches "Ublock origin". Results: (This is actually a real life test)

1. (Ad) Adblock Pro for Safari

Note: The rest are actual organic "results"!

2. Brave Browser & Search Engine (WTF?)

3. Ublock: Ad Blocker, Speed Test

4. Firefox Focus: Privacy Browser

5: Same as #1 but organic

6: AdGuard

I gave up trying to find actual Ublock Origin Lite in these results, but I did install it on my phone earlier so it must be in there somewhere.

A working search would have Ublock Origin Lite as #2 after the ad. If I'm Ublock Origin Lite, I might be satisfied with this and trust that anyone who isn't too easily distracted should be able to find me right there above the fold. So I'd be less likely to buy an ad than I am in our real world. #2 isn't as good as #1, but it's good enough for a lot of people. Combine this with not allowing people to infringe trademarks in their keywords or whatever shenanigans is going on above, and the App Store would be a lot less of a scamware cesspool. And boy, do scams pay well!