It’s common to receive a mail from some service that they’re changing the terms and conditions of their service (internet provider, gmail, etc.) These changes are unilateral and can be about anything, from their privacy policy to the money they intend to charge me.
Why can’t I unilaterally send them a mail and say, I am changing the terms of my patronage and will now insert my new policy (pay only xx amount, or demand a mint Chico chip ice cream every Tuesday)?
That’s the argument that it shouldn’t be an enforceable contract. The company is unilaterally establishing terms with no opportunity to negotiate, which is not a valid contract. Unfortunately it seems to be treated as one in our dystopia