that's like tesla releasing a car saying if you are a lawyer who wants to drive it you have to pay them 100k a year plus 30% of what you earn, or are "free" to drive another car (even if theirs is the fastest/safest/best-for-price in the market.)
or, now, can obtain a "provisional" license to drive it that expires weekly, with the same option to pay yearly for an annual license - these are all artificial barriers. installing software has up till now always been as simple as owning the device you're running it on and running the appropriate commands, these artificual barriers introduced by apple ensure anyone wanting to do so has to check in to see if it's okay with them.