Yeah, if (BIG if) they actually generate demand for it, mass producing power generators will be easier to do than mass producing planes. Starlink was SpaceX's way to generate their own demand - they have a vision of scaling up rocket launchers, but without Starlink there wouldn't be enough demand for it. Likewise I can imagine there won't be much demand for hypersonic airplanes, not enough to run a business. At least the Concorde was only one of several models that the manufacturers produced, so it wasn't their only product.
I can see some issues there. Spacex was in a unique position to do starlink as about the only cheap launch provider whereas there are many existing gas turbine producers. Also the gas turbine thing is a bit of a temporary fix to get power for the AI bubble. Longer term they'll probably use more environmentally friendly solutions?
Great analogy if it pays off.
I'd wonder how it competes with nuclear for scale and existing gas turbines for cost and efficiency.