Apparently the Concorde was only purchased/operated by Air France and British Airways, on transAtlantic routes.
The routes given for this plane - across the pacific - are not over land.
Can this plane go supersonic over land?
The problem is not technical, but regulatory. The Concorde's sonic boom was very loud and a big nuisance. That's why it was forbidden.
There are multiple supersonic jets in development (private jets), that all plan on having a much reduced sonic boom that should allow regulations to be lifted. But that will have to be demonstrated to regulators first.
If you can't fly supersonic overland, it severely limits the utility and the possible routes.
Supersonic aircraft are TERRIBLY inefficient when flying subsonic, and use up a lot of fuel when doing so.
Cut it down to five hours, and I'll gladly pay $5000 for a round trip ticket.
As faster satellite wifi becomes a thing the longer flights are tolerable, but it's still time you could be on the ground doing something more useful.
On the other hand, I'm very doubtful about Boom; the fact that they mostly seem to be talking about the passenger cabin does not inspire a ton of confidence, and even if they get their plane built, I have doubts about their ticket price projections.
I suspect that it's highly questionable whether a supersonic design would be able to do the "brutally long" flights without refueling. The market for the Concorde and I imagine the market for this is the CEO/investment banker/international lawyer who wants to do a quick hop from NYC to London or Paris--including day trips.
Edit: also, lovely big windows.