The MacOS App Store is woefully mismanaged. It has bloated to over 30,000 apps. Many of these are of a poor quality, and many of which (appropriately called “dead apps”) have long ceased to be maintained.
Worse, many apps (especially developer tools and pro apps) cannot be sold through the App Store, due to Apple’s sandboxing policy. In theory, this exists to protect consumers. It limits the chance of any malicious software slipping into the App Store by limiting what it can do.
But this can act as a barrier to some legitimate activities.