Also notable for Obsidian that it is totally free for nearly anyone who uses it (only needs to be paid for explicit commercial use with 2 or more people or if you want to use one of their superfluous datahosting options) and that their privacy policy is pretty explicit that they gather nothing.
If they ever paywall useful features, I'd definitely be off to different pastures... with full access to all my data since it's just plaintext files.
I'd also prefer for it to be FOSS, and if the open source community ever knocks it off (preferably including compatibility with the existing plugins), I'd jump on that even if it were a bit less polished. I'm definitely one of those people who will chose a worse FOSS alternative just because it's FOSS. But yeah, similar to you, I don't think anything that is compatible with my needs.