> A rule is proposed to require customers to be able to cancel any subscription on the vendor's website.
Except that's not the proposed rule. The way this works in California (and the way the rule the FTC recently published works, I believe) is that a business is required to allow customers to cancel "in the same medium" that they subscribed. That doesn't require anyone to start running a website.
The rest of your post is just arguing against something that's not even happening.