Corps figured out sustained income was better than marketing and making products. All they had to do was take away every digital product and turn it into a subscription.
Then they'll buy each other up until they are an effective monopoly and raise prices forever.
I don't see a way out of this for products already captured if you need them.
Problem is, they should realise this only creates a gap for a competitor or even worse (from the companies' perspective) a viable open source project that they'll never be able to compete on price with.
If the licence is already open source then they can't do shit. Unfortunately, they have other methods of discouraging programmers from working on the project, but ultimately open source will prevail.