Drones generate lift by pushing against the air, rockets are trying to get past as much of the air as possible because orbit involves going sideways so fast that, even though the satellites are always falling, they keep missing the ground.

That necessary speed is such that even air too thin to generate helpful lift[0] is ram-compressed to be thick and hot enough to cut exactly, non-metaphorically, like a blowtorch.

[0] Maximum heating during re-entry is 55-80km, less than the Karman line but still higher than non-rocket-powered aircraft. Not exactly the same thing, but gives you a useful comparison point.