Webhosting integration with Paypal is very efficient

Compared to online stores selling physical products , the billing interface of webhosting companies with Paypal is very efficient, very rarely does a buyer experience any kind of error.
Immediately after making payment, the buyer is redirected to billing page of the webhosting website.
The main problem faced is that the email account used for the webhosting account is used to login to the paypal account, when many people are not using their paypal email id for their webhosting account.