I recently switched to developing VST audio plugins and I'm loving it. Already done 3 [0][1][2] and I want to keep doing this if I manage to generate some income from it. I develop them in Typescript and then convert them to C++ with Webview, this way I have a web demo of the plugin that is almost identical to the one you get for the DAW.

[0]: https://technokick.com/ (Techno Kick synth)

[1]: https://riviera-demo.surge.sh/ (Reverb effect)

[2]: https://ya3.surge.sh/ (TB-303 synth clone)