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" ... Robots with multirotors can do that, because they can do things conventional planes can't. Like stop in mid-air. And make a sharp right turn. Or a sharp down turn. That would be very cool, but as noted, the best designs are hybrid, so you have more constraints in that mode. But when needed, you can switch surprisingly quickly, at a cost in energy. ... "
" ... That's why a large fraction of teams are working on dual-approach vehicles, which take off as multirotors, but also have wings and convert once off the ground to regular fixed-wing flight. The wings, not needed for traditional take-off, don't need to be nearly as big as they are on traditional aircraft. In addition, with the rotors running, they don't stall. ... "