That's what led me to this. I quit Audible a few months back, planning to just buy more media outright. But they offered me a "come back and pay $0.99 for the first three months!" and I'm not really saying "no" to basically giving them Amazon's money. (Though for the holidays they've apparently upped the offer to that plus a $20 credit.) So I thought this would be a good general question as I look for more ways to support creators directly, after taking their money runs out.
Good mention of Libby, too. A coworker recommended that to me, so I've got it now as well. Sadly my local selection isn't great for audiobooks. But it does make me want to get an ereader more.
Bandcamp looks to be a good way to buy music though, as someone mentioned. But I can't find any good way to buy digital copies of movies/TV. It's all pretty platform locked, it seems.
While I'm reluctant to call anyone a magnum opus... You're bang on about the difference between those two and SWFG.