Fusion 360 is also free for businesses that bring in less than 100,000 per year. No licensing or legal issues.
They want to get u hooked, so when you make it big, all you know is Autodesk. Then they charge the big bucks for Inventor Pro and HSM.
They have genius marketing. Free to hobbyists, businesses under a hundred grand, and especially free and heavily marketed to students, teachers and colleges. They want everyone who graduates to be in love with Autodesk.
They got their hooks into me with Autocad, inventor and HSM in college.