A virus that kills their hosts itself dies out quickly. Viruses that thrive, and that we actually have most problems with, are ones that spread before manifesting symptoms.

Much like viruses, systems are subject to selection pressures over time. Systems that are too damaging to society makes society develop memetic, cultural and legal immunity against them. Systems that let individual members easily kill them are fragile and don't survive either.

Systems that thrive are ones that are mild enough to not cause too much external resistance, and are resilient enough to not allow individuals to accidentally or intentionally break them from within.

I think you’re agreeing in a way - they are making the decisions that maximise their profits in the existing system (capitalism) and the system is such that it will produce people like this. They can nudge it in their preferred direction but if they were in, say, a frontier economy they’d likely make different decisions.

They may destroy their creations but that would be a minor blip in overall system that will keep moving. Destruction of Facebook, Amazon, SpaceX won't destroy social media, eCommerce or reusable rockets. Previously destruction of giants like IBM/Apple(1st round)/Cray/Sun had no impact on PC, GUI, Supercomputers, Servers or any other fields they were pioneer in. Even if OpenAI/Gemini/Anthropic all disappear immediately the void will be replaced by something else.

That's actually a quite good high-level measure. However, I'd question your measurement: I doubt that Musk, Zuckerberg and Thiel would actually be able to destroy their creations. SpaceX, Tesla, X, Meta, Palantir - they're all large organizations with many stakeholders, and their founders/chairman do not have absolute control over them. The result of any of those individuals attempting to destroy their creations is not guaranteed - on the contrary, I'd expect other stakeholders to quickly intervene to block or pivot any such moves; the organization would survive, and such move would only make the market lose confidence in the one making it.

There's no total ownership in structures as large as this - neither in companies nor in countries. There are other stakeholders, and then the organization has a mind of its own, and they all react to actions of whoever is nominally "running it".

You can also measure agency as the power to destroy other things.

That's a very naive take - but also a popular one, because it gives people license to hate those who seem to be better off.

The truth is, no one just acquires power on their own - people with power have it because other people let them, and they can wield this power only as long, and only in ways, as others allow it. Gaining power doesn't make one more free to exercise it - on the contrary, the more power you have, the more constrained you are by interests of those who provide you that power.