As someone else said GPL !== OSS.
> The GPL was "To prevent free code from being proprietarized" by for-profit corporations.
You are adding the "by for-profit corporations" here. That's not in the link you provided. Let's distinguish between what was actually said or meant, and your own personal interpretation or editorializing here.
In the GPL context "proprietarized" could apply to anyone. I could write and release proprietary code with restrictive usage limits, and I'm not a corporation. And the GPL wants to prevent me from doing that as well.
The right to see and modify the source code to the software you run is not restricted, or aimed at, individuals or corporations. I think the GPL's goals here are universal, meaning any entity should have those rights.
Which I think is a good thing. We agree on the ideals of free software here, I just think you're layering "for-profit corporations" on top of it in a manner that was never actually part of the philosophy, because it doesn't make those distinctions.
It can certainly be part of your philosophy, but be clear about that.