Back 20 years ago it cost companies more to aquire new people than to keep existing customers happy. Hence "grandfathering" people was common. Loyalty paid off.

Back 20 years ago it cost companies more to aquire new people than to keep existing customers happy. Hence "grandfathering" people was common. Loyalty paid off. I have a netflix account that is older than the founding date listed on Wikipedia yet I pay exactly the same as someone who signs up today.