However, I did recently discover Horizon EDA, which uses the Kicad core, but is way way way way saner and easier to use. Give it a decade and it might be worthy competition. Though surely Altium is only really targeted at FTSE500 companies who need really advanced features and can easily afford $10k licenses. I don't see them using open source alternatives.
Anyway, I just want to big up Horizon a bit more because it's so so so much better than Kicad: