Well, it's no longer brewing, it's deflating. It looks to me like the Big-Money was the last money in and probably the first out. It wasn't lots of "little people" adding Billions each day. Mr DV's (dollar vigilante) words are now ringing true that you don't know you are in a bubble until afterwards to paraphrase.
There is and will continue to be a bubble of investment here because it is an earth-shaking arena. It will change everything just as the Internet 1.0 changed everything. And the powers-that-shouldn't be will appear to have the upper hand, until one day they don't.
And beyond blaming TPTSB real markets are scary and subject to the Madness of Crowds.