And apparently you only needed to flip 4000 votes in swing states to secure the electoral college numbers... 4000 targeted ads on Facebook, how much did that cost? Cambridge Analytica knows.

Where did you get that idea? We know from the Mueller report that they indeed paid to try to influence the election, but the sums were tiny compared to what the actual candidates paid. Also, please remember that Cambridge Analytica was hired by Trump ('s people) , not the Russians.