A question about media lost in fires

Many silent films like London After Midnight (1927), Saved from the Titanic (1912), and The Honeymoon (1929) etc. got burned in fires because they were stored in nitrate film canisters, which are very flammable and can easily set themselves on fire if they are neglected for too long or stored improperly.

That reason alone is why so many silent films are lost or are thought to be irrecoverable, along with film companies not seeing any reason to preserve them because they were released before the advent of TV and streaming services.