1. It requires subject preparation to avoid going off on a tangent. (in the case of the video above I cheated and use prewritten code, and the video was still 30+min long.)
2. It requires specialized software and hardware that's not free. (good recording software + good mic + good webcam are $50-100 each)
3. It requires good hardware preparation too (e.g. precise placement of the mic and good light for webcam, so I couldn't record at night)
4. It requires time for editing (unless in my case you slap on background audio and call it a day)
I bought a new mic since I was unhappy with the audio quality in that video, and am taking steps to refine video focus.
Studio lighting would solve that and falls into your mentioned price range per item.
DHH's blogpost - https://m.signalvnoise.com/on-writing-software-well-aee37807...
https://www.youtube.com/channel/UCdx5Dk3EWTe2i8YDA7bfl6g/vid...