If this works via induction could you even eliminate the need for the drones to land?

Assuming flight conditions are good, there would be a region around the wire (line of charge) with an electric/magnetic field that the drones could use, any shielding notwithstanding.

Coupling falls off rapidly with distance. It's why a thick enough phone case will interfere with magnetic charging, and that's only on the scale of a few millimeters.

Drones consume a lot of power while in flight. You can get a little bit of power out of powerlines standing underneath them with some tricks, but it's not enough to keep a drone in flight. At least not without something prohibitively large to couple to the line.

It's also risky to hover near a stationary object because the longer you hover, the more you're exposed to the risk of a wind gust knocking you into the nearby obstacle.

iirc efficiency loss in wireless energy transmission is exponential? someone correct me. But basically after just a few mm the losses are so great that the amount of electricity needed becomes ridiculously wasteful.

to power a running drone at more than a few inches would be just...a lot.

That was my thought as well...I suppose there may be something I am not thinking of. Perhaps they get more total energy if they "perch" on the tower.