So what language would you use to require parity between making and breaking the consumer relationship? You can always construct situations where a rule is genuinely ambiguous, construct situations where the counter-party is held to an unreasonable standard, or the company is risk-averse and overreacts, or they hate it so much they engage in malicious compliance, etc. Many error-modes. But that is true for every law, which is why you have case law, and why laws get revised. This happens with every law, because they are ALL ultimately ambiguous, and they can ALL be used by malefactors, and they must change in application over time with society, technology and all the rest.

What bothers me most is that these companies are actively deviating from the ordinary, obvious, symmetrical path in order to fleece customers. So to comply with the law is really to stop going out of their way to commit petty, pervasive, stochastic fraud against their customers. That is, it doesn't require positive action so much as negative action. Which makes it even less objectionable.

The other day I went to cancel Comcast. And you know what? I first logged into my acount. From there I could literally do everything instantly - sign up, add services, upgrade, everything - but I couldn't cancel. There was no button, no link, no wording. I had to Google it. And it was a phone number hidden on their website that was business hours only. And I called it and spent ~10 minutes cancelling my service. Comcast had to ideate, design, implement, staff, build organization around this behavior. Its transparently wrong, it's too common, and it's a practice that should be stopped.