Many artists I like were signed with a now defunct record label called Tympanik Audio. Whoever got the rights to the name after the label went under stopped paying their Spotify license fees, and a large chunk of my Spotify library vanished overnight. While the albums still exist on Bandcamp, the money probably gets thrown into the void now.

Never again. The only way I can ensure my music is accessible tomorrow is to have my own copy. I buy on Bandcamp where I can, or will buy physical and rip it if I really like the album. Everything else gets ripped from Deezer automatically because there's no guarantee anything on those platforms will always be there.