The angle of attack at both takeoff and touch down is pretty wild!
F-22 is a marvel, and can fly supersonic for much longer, but its cost is exorbitant, and it's not even produced any more.
F-35 is more economical but it literally can fly supersonic for a minute or two with the currently installed engines.
Why would you spend a single dollar on making your launch platform go a little bit faster when the thing you are launching goes faster than Mach 4? And that was true in the 80s.
Power output is important but top speed is not a priority. The B1 Program was cut partially because you could just buy 100 stealthy cruise missiles for the price of one B1 bomber which the Air Force did not think was more survivable than a B52. In the 80s.
Every country has built slower planes entirely because higher sustained top speed just means a more expensive engine, more fuel usage, and more frequent maintenance.
Boom insists they will somehow magically overcome all of those problems.
I'd say that manned military aircraft should generally be on decline, and manned fighter aircraft, tenfold so. The future belongs to drones that can withstand 30G, and have the "brain" more evenly distributed within the craft to increase survivability, and which can carry extra 1000 lb of payload because they have no human + cockpit + ejector seat + life support system on board.
And also, fuel cost is probably the last concern of an Air Force. Maybe logistics of supplying fuel in an actual war is important, but I think the money for buying the fuel itself is basically zero compared to maintenance and getting the plane in the first place.
(which I think is good but ymmv)
Lockheed Martin and Northrop Grumman are pretty squarely military only.
Government contractor would be closer i think.
Lockheed Martin Space employs quarter of their total workforce and does both, they built the Hubble, and now working on Orion and so on. Key components of Hubble did come from "dual-use" technology i.e. spy satellites.
They also claim to be a potential candidate for a next gen Air Force One.
That's the game with aerospace startups though. The CEO gets everyone wrapped around a "vision" for some gonna-save-humanity green peace machine (insert obligatory disaster response mission) and then once everyone is hooked you look up one day from your cruise missile design and wonder WTF just happened...
Source: have worked for several of these kinds of startups, have seen this happen pretty much everywhere.