Most, if not all of these service are billed before you get access. Ergo, if they cannot bill you, they can immediately revoke access.

The system is built in such a way that they get a lot of information about you (e.g. SSN for internet access) subsequently used to ensure cancellation is extremely painful.

If they didn't have this information, failure to bill would be immediate service pausing/termination, so it's not even that non-payment results in money lost for the company.

For email accounts I create burners. I wish I could do the same in real life.