I bet it will take a law to make third-party app stores the norm in the US

I tend not to get my hopes up too high about positive political legislation in the US. I'm not a pessimist, exactly, but even in the best of times, the odds seem to be against idealistic bills -- if they're not defeated in the House of Representatives, they're often defeated in the Senate, and even passing both chambers runs the risk of a Presidential veto. Many bills don't get to the House floor in the first place.

Source : https://www.pocket-lint.com/law-to-make-third-party-app-stores-the-norm/