Not GP, and don’t have their patience anyway. But while I see them as real computers, they aren’t any that I enjoy using, so I care relatively little for them.
In most well designed systems the only keys that are useful are held in HSMs that won't export them to anyone, so you can't easily do that. You could at best sign a few things with the keys if you were able to compromise HSM credentials, but, once you were caught your access would be revoked along with anything you signed.
> The only worthy cause to apply my patience to.
This already happened for smartphones.
Concerning your first claim: Did you attempt to get a job at such a company to leak the keys?
Concerning your second claim: Did you already invest lots of personal ressources for this cause?