Well, the Digital Markets Act basically regulates the things you're asking for. It's specifically designed to tackle "gatekeepers", such as the Google/Apply duo

Well, the Digital Markets Act basically regulates the things you're asking for. It's specifically designed to tackle "gatekeepers", such as the Google/Apply duopoly on smartphones, Metas hold on chat (especially in Europe, where WhatsApp is very popular), Amazons hold on the online marketplace, etc. It's a very new regulation, so we've yet to really see the effects.