My personal tin foil (i.e. completely unprovable) theory is this:
All of these "Russian bots" (well, a significant amount of them - I'm sure Putin has an online army as well) are actually P.R. firms and agents of big corporations that see big $$$$ from dividing the American population. Who are the ones profiting from all of this? Russians are just a convenient scapegoat and potential cash cow for the military industrial complex. I'd wager THAT is what all the behind-closed-doors meetings and "collusion" has been about.
Just play along, drum up paranoia about Russians, divide the population down the middle and Putin, Trump and the rest of the global Aristocracy laugh all the way to the bank.