Adsense/Adwords spews tens of billions of dollars in profits every year. Google's political economy incentivizes groups to build new products not for their revenue streams but to claim larger bonuses of the ad-revenue pie. The users who buy into these "new" products are just cannon fodder in that game. Remember Google+? Vic Gundotra made off with probably tens of millions or more to launch a failed product.

Almost anything MSFT releases in response to Google or competitors is inferior but MSFT's products are preferable due to implied longevity. MSFT has inoculated themselves against this parasitic political economy while Google and its users are held hostage by it.