Google's bread and butter (Adwords, Search algorithms and related data) are not installed on 90% of the world's PCs, they're guarded as trade secrets. Android,

Google's bread and butter (Adwords, Search algorithms and related data) are not installed on 90% of the world's PCs, they're guarded as trade secrets. Android, Chrome and the rest only feed data and users to what is a secret. They're free and "open" to encourage adoption and by extension get more ads served, increase ad relevancy and as a bonus try to ruin Apple's and MSFT's business.