It was Apple and MS, now Apple and Google. The structure of the market is the same because of the same acting forces. Google fills the same space for mobile non-PC gadgets that MS has filled for PC - the common software platform for hardware manufacturers. As in case of PC, the hardware manufacturers who isn't running the platform will become flushed out (except for Apple :). There is nothing in that situation that requires openness, even more - the openness may put the business at risk.