If that happens, I won't buy them anymore. The boards don't have an expiration date, and I can roll my own distribution "if it comes to that". Have done that in a professional capacity back then, can do it again.
You're right, but I refuse to keep my mind busy with it. I'll look around when I need a new SBC for the task at hand, and if RaspberryPi has enshittified, I'll just pass.
So it's an if from my perspective, since I don't constantly watch them and ask "aretheyenshittifiedyet?".