The only advantage of PX4 is its license - it’s BSD vs Ardupilot’s GPL, so companies can use the code without giving back. The mindshare just isn’t there - PX4

The only advantage of PX4 is its license - it’s BSD vs Ardupilot’s GPL, so companies can use the code without giving back. The mindshare just isn’t there - PX4 is orders of magnitude more obscure, so instead of YouTube tutorials you’ll be trying to get help on PX4 specific forums or digging through the code base.