Altium is an enterprise level software that is just in a different league as kicad. Both are great products but it’s no sense comparing two very different products. I’ve never personally seen a company seriously use Kicad. I’m sure it’s possible but it’s not a tool you want your company to depend on. I find it hard to believe altiums ‘most commonly used’ claim. Maybe cadence just isn’t as worried about marketing? Haha.