He bought it to completely destroy it because it was one of the few big social media platforms that didn’t give a distinct advantage to RWNJs.
It’s weird to me that this isn’t more commonly believed, because his main aim with all this is to make America more oligarchic (i.e. great again) and become an oligarch, as is the fashion among rich white supremacists.
Not to get political.
Their financial instruments are so byzantine and dynamic that probably only one of their quants could tell you. It’s probably less than could be hoped, given the level of corruption inherent to the system. Remember that literal crime is profitable even when you get caught, in Wall Street.