I mean one studio makes a great game and a bunch of other studios make shitty games… then gamers like the game which is better and want more games to be like that. Traditionally that’s called market forces, not a weapon.
That depends on the country you live in. In Australia for instance anything that looks like a “sale” must be an actual sale of a product and can’t be something else sneakily disguised as a sale. It’s illegal for services like Steam or app stores to deny you access to software you’ve bought on their platform in Australia.
That doesn’t mean it hasn’t happened before though.