For nothing USA have plans to have 100,000 drones in the near future.. They using the pretext of "defense of cities from terrorist" as pretext to build so gigantic attack drone force.
But will this gigantic drone force be used against Americas external enemies or her internal enemies.
Escape from New York was a great documentary about the use of Manhatten Island as a huge prison for Americas increasing prison population... perhaps they have updated the plan from the 1980s and they will use armed drones and a desert city like Los Vegas as the prison...
Charge Rich people money to manually fly the drones around the desert shooting poor people trying to escape... Now it sounds like a Van Damme movie... Hard target...
I mean ,that i think ,that the performance of the 20 missiles ,2 per channel only apply for small missiles with 40km range.. but if the targets are 400km away ,you can only use the Big missiles ,that only one fit in the tube at the same time. So 10 missiles for 10 targets at 200km-400km range. And 20 missiles when using the small missiles that have small range . Two can fit per tube.
I think you are confusing an air defence missile system with a single vehicle. An Air defence missile system can include up to 8 missile carrying vehicles with 4-16 missiles each vehicle depending on their size/range. With all 400km range missiles that means 32 tubes... with all 120km range small missiles (which take up the same amount of space as the 40km range missiles but are just longer) it could have 128 missiles ready to fire.
Another key point you are not getting is that for every big system like S-400, there will likely be rather more smaller systems like Vityaz (S-350), and even more shorter range systems... and these are Air Force and Air Defence Systems... there will also be ship based SAMs and naval land based SAMs and Army SAMs and of course aircraft.
Russia doesn't need an S-400 guidance channel for every enemy aircraft... when was the last time every single aircraft in an air force was destroyed?
Even during WWII the German Air Force managed to destroy 2-3 thousand Soviet aircraft in the first 2-3 weeks of the war but still didn't win. Planes were easier and faster to build back then, but the german forces were also moving through Russian territory so there was no place to hide aircraft so they couldn't find them.
Russia also had aircraft on her Pacific front.
Of course, all of these numbers are pretty meaningless. In the way of information denial, the Russians always publish massively lower performance figures for their systems.
Another factor is hardware and software upgrades, which can increase performance radically overnight.