The parent is specifically addressing that point. You don't own most of the software you are purchasing. The vendor retains either the technical or legal ability to reach into your machine and disable the software via the licensing agreement.
I understand the point, which is really reasonable.
But how about this way;
In order to disable the software that I installed on my machine, they need to know who I am, which computer it is installed to, plus lots of other procedures to deal with. Which is time consuming and not easy.
License or not, source or not, if I have something installed on my computer, I can modify it or at least attempt to do so. I can also run it without a reliable network connection. Not so much for streaming services.
Yeah how's that work? In the US any terms made after money is tendered are void. This was done to avoid someone adding terms to a contract on delivery. SO is it true for software too? What about electronic download?