Well, the point of this is a lot of suckers forget about cancelling and it makes Adobe a lot of money.
I don’t know where, but I read that subscription services make a lot of money from people that are paying for it but not using it, or barely using it. I guess the “free trial” is the tasty carrot dangling at the end of the stick to attract new “customers” to this fair and honorable practice of “product as a service”.