I was a bit disappointed with the Boom XB-1. They originally announced - designed to maintain a speed of Mach 2.2, with over 1,000 nautical miles. I thought coo

I was a bit disappointed with the Boom XB-1. They originally announced - designed to maintain a speed of Mach 2.2, with over 1,000 nautical miles. I thought cool. Then 7 years late they fly and - Mach 1.1 and no long–range. Then rather than develop it they say it's retired, we'll take orders for Overture now. I wonder what's going on there?