I’m pretty sure it isn’t meant as a legal argument.
What entitles me to control of my computer? “My computer is mine, and you cannot have it.”.
That being said, I’m somewhat more open to the validity of restrictions for how to interact with the server.
If someone e.g. is running an MMO with e.g. in-game items with real money value, and someone else is like, distributing cheats to get these items immediately, it seems fair that the MMO owner should be able to make them stop (though, like, ideally their game would just be secure?)
But if users are permitted to interact with the server in a particular way, I see no reason to allow requiring that users actually touch their mouse and keyboard while doing things they are allowed to do using their mouse and keyboard.
But since they do require that now indirectly I have an idea....
Lets have a law that requires all large services to expose all account settings though an API(?!)
Basically, 1) you [as usual] get to set up the terms of service that your users must stick to, 2) you get to pick what account options you want to offer to the user. i.e. do you want to receive email notifications yes/no, do you want to upload an avatar yes/no, what url/email/phone number do you want to display on your profile etc 3) You do not own these settings and shall provide an API for the user to change them.
You could extend the concept with things like allowing the download of a contact list with the contacts who have this enabled and the information they chose to share. Or say offer TOS updates though the API.
But the initial goal should be for browsers to offer a uniform settings page for all websites you have accounts for.
Remember that unsolicited email check box just above that for to the terms of service? If you use the site all the time you might want to opt in but who wants to dig though a website looking for it? Maybe in hind sight targeted advertisement is just what you wanted? Maybe a feed of updated settings would be useful.
Or maybe you just want to delete your accounts in a convenient way.
Sounds like a factual argument, if facebook provides access through an open website that implements standard web api's the users can interact with it however they want/are able regardless if fb likes that or not.
Why are you entitled to all these things? What gives you the right to demand that others act in accordance with your desires?