[bityard]

Less-than-fully-reputable shared hosting providers have been doing a variation on this for decades. Although normally in the form of a pop-up or banner at the top of the page.

When I worked for a hosting provider, an overdue account would get daily emails for up to a month. After a month, the site would be disabled (404) or the VPS would be turned off. After three months, the site/VPS would be archived. After one year, the archive was deleted.

Astonishingly, there was always a fairly steady stream of customers who would come back over a year later and ask for their site to be restored, or to get a copy of it. I never enjoyed being the person who had to give them the bad news of the consequences of their choices.