At least they still exist somewhere, albeit hidden. In the early days of television, the BBC routinely taped over episodes, even of really popular shows, because the tapes were expensive.
Example: https://en.wikipedia.org/wiki/Doctor_Who_missing_episodes
Every now and then a box of old VHS recordings turns up in someone’s shed or attic, and can be added back in to the archive. https://www.bbc.co.uk/news/uk-england-leicestershire-67218634
The Russian government cracks down really hard on anyone daring to protest against the war. You can be jailed for even calling it a war - it’s a “special military operation”.
https://en.m.wikipedia.org/wiki/Anti-war_protests_in_Russia_(2022–present)