The thing is, the reason they have those megabillions and continue to make money is the institutional knowledge they have of how to run a mature business in the

The thing is, the reason they have those megabillions and continue to make money is the institutional knowledge they have of how to run a mature business in the industry they're in. Parts of that will translate over to nuclear power or whatever comes next, but for a very significant chunk of it, they're competing with every other business in the new industry, many of which will have a lot less baggage - which is incredibly risky.