There is a history of digital copies being “pulled back” due to licensing changes and contracts expiring. This has happened with Steam, with Apple Music, Apple TV movies, and Sony is doing it at this very moment with PS5 games. If you don’t have the bits in your own storage, you don’t own it.

It has definitely happened in the past, but in practice it’s a very small percentage of titles that are fully removed from your account beyond delisting.

It’s a risk many people may be willing to take especially with low value purchases.

This is weighed against the costs and inconveniences of keeping physical disks or self-hosting infrastructure running.