This is the case with most major products from most major tech companies. There is a reason you don't (often) see steady incremental progress on products, but

This is the case with most major products from most major tech companies. There is a reason you don't (often) see steady incremental progress on products, but rather big flashy releases that never quite get their bugs cleaned up unless they are wildly* successful. * Where wildly is defined as a success level which would leave any rational founder very wealthy, and very content.