I replaced Windows with Linux and everything's going great

This thinking is part of the reason for the momentum behind RISC-V and LoongArch.

RISC-V is a lot like Linux in that it benefits from International cooperation and innovation while offereing the ability to seize control if needed.

But you are correct that even an open ISA does not protect you from a proprietary hardware implementation at the chip or firmware level that you still do not control. This requires additional open standards.

Bigger picture, it means "domestic" chip design and fabrication capabilities. The world is just starting to wrap its mind around this. But again, RISC-V is really helping here. There are emerging RISC-V chip capabilities in Europe and even in places like India for example. It is easy to laugh off these efforts as non-competitive. But not only will many of them find niches where they will be economically pheasible but they offer an important backstop to geopolitical risk and the flexibility to at least of enough domestic capability to keep the lights on if needed. Building and rolling out a RISC-V ecosystem will take years or decades. But once there, it can be pivotied to or maintained on any RISC-V chip. As long as you have the ability to produce some kind of RISC-V chip, this ecosystem can never really be taken away from you.

And RISC-V offers the same kind of international collaboration that allows both pooling of efforts and protection from reliance on any one actor or region that could become a political threat.

RISC-V understands its role in this regard. It too was an "American" technology but Linux International was setup in Switzerland for a reason.

OpenBSD is based in Calgary, Alberta, Canada.

NetBSD is a non-profit based out of Deleware, USA

I am not sure exactly what you mean by "US-focused" though. I do not think the US government has much direct influence in practice. Both governance and engineering contributions in BSD are highly distributed internationally.

That said, FreeBSD in particular has quite a lot of corporate contribution. Netflix is a heavy user of and contributor to FreeBSD for example. And the recent $750,000 laptop push in FreeBSD is being driven by Quantum Leap Research out of Virginia.

The fact that the BSD systems have less coporate reliance does not necessarily offer more protection though. There is less corporate "control" simply because the BSD systems are less important economically.

You could fork Linux anytime you like and your fork would than have as little corporate control as NetBSD. And just like NetBSD, not taking US corporate contributions would mean less engineering investmetn overall and potentially having to do more yourself.

I mean, it would probably be easier for the EU or China to fork Linux than it would be for them to migrate to OpenBSD if they wanted independence from US exposure.