According to Vanguard, over 85% of actively traded funds don't beat the S&P 500, and it's quite possible the one's that do are simply lucky, as in any random distribution there will be a small percentage, of course, that are over 2SD on the profit side.
2bil is so easy. Highly rated tax-free munibonds...a very safe 3% coupon will net you completely tax-free 60mil/yr...I would say plenty to live off of and even reinvest.