The main problem with Concorde was that it couldn't fill up seats at the ticket prices being charged, and transatlantic subsonic flights were both more comfortable at the equivalent ticket price, and at the flying time sweet spot of 6-8 hours, which is long enough to just sleep and wake up in the morning.
Had SSTs come of age in the '80s and had a range closer to 6000nm, then they probably would've taken off for transpacific flights. 6000nm from HNL gets you to pretty much all of East Asia, Singapore, and the entirety of North America.
I think all this talk “MVP” and startups so often in the same sentence over nearly a decade now makes me worried that Boom won’t have enough resources to achieve anything less than an exceptional job with regards to safety.
And my life isn’t worth risking to save a few hours of travel time by putting it in the hands of a startup.
Concorde's only fatal accident was a result of running over debris that punctured the fuel tank and burst a tire, so it wasn't necessarily any issue with the plane itself. Conveniently enough, this also happened near the EOL of the plane, right before a recession and 9/11.