Plenty of proposed solutions, but nothing mature and proven. Again, the US military is still struggling to find answers. Drones dominate the Russia-Ukraine fron

Plenty of proposed solutions, but nothing mature and proven. Again, the US military is still struggling to find answers. Drones dominate the Russia-Ukraine front (and the rear, per the OP). Why are they so effective in Ukraine and Russia if there are so many solutions? Why do all the experts say they will transform warfare?