I have a different take on this. Hillary! Weaken Obama to the point of empty suit. Keep punching, and Hillary rides in on White Horse. Why you ask? Trump’s agent is Rahm’s brother, look over Trump’s contributions to candidates in past. Demorats. Guess who is a friend to Trump? Clintons. He looks to all that he is running to either run, or to pave way for another Republican. Not! Then he says might run as Indy, great! Split Repub vote. In walks Hill. This is how I see it anyway. Color me a conspircy Theorist or whatever, but I don’t trust Trump.
This is the only likely/ most likely explanation for the Trump phenomenon.