All of this technology is wonderful....and we’ll never, ever see it in commerical airliners.
One, the economics just aren’t there. We could have had Mach 3 airliners decades ago. It’s cheaper to pack passengers in like sardines into big, fat, slow airplanes.
Two, environmentalists will help kill it. Too fast, too noisy, too poluting, etc.
Airliner performance has been essentially unchanged in 40 years. We’re still stuck in fat, tubular, slow cattle cars. And we’ll live out our lives and die before we see anything different. 787’s are nothing but 707’s with neat computers, plastic parts, and quieter engines.
People wouldn't stand for all the sonic booms.