You need to remember that Boeing actually went faster first, and when that failed, they went to the 7E7 - what eventually became the 787. See https://en.wikiped

You need to remember that Boeing actually went faster first, and when that failed, they went to the 7E7 - what eventually became the 787. See https://en.wikipedia.org/wiki/Boeing_Sonic_Cruiser https://en.wikipedia.org/wiki/Boeing_Sonic_Cruiser Boeing ended up doing pretty well with that mistep. It kept them from launching the 747 expansion that they were talking about (which would have been a disaster) and eventually made them really listen to customers - something that Airbus wasn't doing in the heady days after the millennium in Europe.