Again, I think you are being completely absurd.

If you sell me a phone, and then deny me the right to use it as phone, then you are breaking the law. At least where I live. I would be able to demand a refund, and the Company could be penalized for lying about what they sell.

You are being absurd.

Also, private businesses should always be able to enforce their rules on their platform/property, as long as they don't discriminate against protected classes like ethnicities, genders, sexualities, etc.

Otherwise you could just shit on the floor of a restaurant, and they could do nothing about it.

Again, you are being absurd.