Everything I've heard (mostly on HN) about working there is that there are simply too many perverse incentives to abandon products. People get promoted for creating exciting new products and then leave those products behind at their new position.
Up-and-comers are also incentivized to do the same thing. There seems to be no appetite whatsoever for hiring "steady hand on the tiller" type people. The whole company DNA is built around hiring elite graduates fresh out of school.
It's the classic "too many chefs in the kitchen" problem.