You can't make anyone sign terms. What you can do is offer and you can also make pre-offer commitments if you feel like it. So they offer and they make the commitment that if you attempt to modify terms, they will instantly reject. At that point, you won't get the service and they won't get the data.
From their side, they also offer a well-defined interface to sign up to their service with the standard set of terms. Now, whether you use a tool that conforms to this interface is up to you. You don't have to use a tool that will conform and you won't get the offer.
Likewise, you can offer a well-defined interface to sign up to your data and everyone else can just choose not to use it and they won't get your offer.
> So they offer and they make the commitment that if you attempt to modify terms, they will instantly reject. At that point, you won't get the service and they won't get the data.
What about shadow profiles in that case? I assume companies track a lot more data on people that just what you put into your account explicitly — photos of friends not on platform, 3rd party sites using Pixel etc.
It's one thing that's really missing from GDPR style controls — if I have an account, I can request that my data is deleted (but not validate it really). What can I do if I don't have an account?
