Long term, shouldn't providers of services like twetch encr…

Long term, shouldn't providers of services like twetch encrypt data on the blockchain? Central parties (i.e. companies like twetch) can then grant or deny acces. Seems like a fucking bitch to actually make happen in a legit secure way. I'm no expert tho
https://twetch.app/t/e5cc10edc2fec308b0ba0605ba696188a5a3007c48806c7fe3c0e3d28cd71416