one of my favourite soap boxes. I'd like some ground-laying legislation about the use of the words "buy" and "sell". As a sanity-check, none of the "buying" and "selling" that happens on platforms like playstore, appstore, steam, prime video etc should be allowed to be called "buying".

Use "pay-once renting" or "lifetime rent" or whatever. "Buying" should be reserved for transactions where the other party cannot (not "must not". cannot!) take back what they sold without involving a third party like the state.