They cant have a monopoly on their own product, thats ludicrous.
'apple has a monopoly on the iphone'
'GM has a monopoly on cadillac'
'BMW has a monopoly on the 3-series'
Of course they have a 'monopoly' on android, android is their product. Android has captured 64%[0] of the smartphone market in russia, this is again not a monopoly. A monopoly would capture 100% of the market, thats the definition of a monopoly.
I'm eager to hear what market Google has captured 100% of, because its not search or smartphones
[0]http://www.statista.com/statistics/262174/market-share-held-...