Dear Startup Investor, Kabam is pivoting. Again. If you invested in the pre-IPO fund we put together with MicroVentures, then you own a piece of Kabam. By the way, you’re in good company. Such big names as Alibaba, Google, Intel, MGM and Warner Bros have also invested in Kabam. It’s the third pivot for the free-to-play gaming company. But this one is different. The other two were a matter of survival. Pivot or fail. This time around, it’s…