> I'm not who you replied to but I believe "over and over" was a reference to recurrent subscription fees.

I mean that with subscription services one is unable to backup, or even "come back" repeatedly to the content. Let's say watching the same movie from time to time - it's not possible because service providers go out of business, copyright deals change, markets become more/less prioritized, different platforms are supported, the repertoire within the subscription changes over time. Thus watching the same movie requires buying it over and over again.