This is the distinction between tilt wing aircraft and tilt rotors. The former were explored in the 60s and found impractical. The latter took longer to develop but are now practical.
The original comment is spot on: hovering vertically with a big wing also vertical just doesn't work well in the real world. That said, the situation might be different for very small drones, for similar reasons to why you don't build full size quadcopters.
The original comment is spot on: hovering vertically with a big wing also vertical just doesn't work well in the real world. That said, the situation might be different for very small drones, for similar reasons to why you don't build full size quadcopters.