There have been a lot of flying wings or blended wing bodies through history. Horten (Germany) in the 30s and 40s, Northrop since the 40s and some russian models from 30s and 40s as well. The concept isn't that new. It just didn't make that much sense so far in non-military, non-stealth applications. Excluding UAVs, the B-2 has build the most with 21, followed by the Horten H.III gluider from WW2 with 19 or so.
One issue could be airport infrastructure, the wing span would take up a lot of terminal / gate space. But if these planes are economically enough, who knows?
One issue could be airport infrastructure, the wing span would take up a lot of terminal / gate space. But if these planes are economically enough, who knows?