[consteval]

1. Customers don't know what cancelling is like before they buy a service. This isn't advertised, obviously.

2. Competing on being easy to cancel is a bad thing, actually. However wins that competition is losing money. That's why you see the competition go in the other direction. As in, who can make the shittiest cancellation interface (Planet Fitness, btw).

3. People who cancel a service are cancelling BECAUSE of the service. Why would they go back to a service they disliked enough to cancel, if the service stays exactly the same? They wouldn't. Meaning, "good cancellation" doesn't count for anything.

So it doesn't help you retain customers, it doesn't help you get back customers you lost, and it doesn't help you get new customers.