That’s been the case for years. One self-hostable payment solution is btcpayserver (also supports lightning). (PayPal recently rolled out allowing users to us

That’s been the case for years. One self-hostable payment solution is btcpayserver (also supports lightning). (PayPal recently rolled out allowing users to use crypto assets including btc for any PayPal payments but arguably that is not “real adoption” in context of payments, as merchants still get paid in fiat with PayPal’s partner Paxos acting as intermediaries)