I am not so sure, but from my understanding it is that if you are a professional or a business and are offering those courses, you can opt to be subsidized. I'm not sure anyone is offering these types of courses in 2025 so I understand the budget goes to more modern courses.
The sad thing is that this goes to show no one has reviewed the technologies, and it's an incentive for fraudulent stuff. Like, create a fake course, nobody opts but your 20 friends, and you get the subsidy.
