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Mobile tech is a duopoly run by two companies - Google and Apple - with a combined $3.5T market cap. Each uses a combination of tech, law, contract and market power to force sellers to do commerce via apps, and each extracts a *massive* commission in-app sales - 15-30%! 1/ 
If you'd like an essay-formatted version of this thread to read or share, here's a link to it on pluralistic.net, my surveillance-free, ad-free, tracker-free blog:
pluralistic.net/2022/12/13/kit… 2/
pluralistic.net/2022/12/13/kit… 2/
This is bad for users and workers. Many companies' gross margins are less than 30%. In some categories, that means there's *no* competition. 3/
