Google is 80% of the world's search engine. Android runs on 70% of phones. YouTube is the most used video site on the internet. Google Maps is the most widely used Navigation tools ever. Google Play is the #1 destination to buy books and films. Yep. Google is powerful.
That last one surprises me - I'd have thought Amazon with Kindle and Apple with iBooks (on iPad in particular) would outsell Google on books. I'd probably have guessed iTunes top for films too but that's less surprising. Do you have a source for it just out of interest?
You are comparing apples and oranges my friend. They all target specific user experiences and vastly different services. If I were to guess, Google would be vastly larger then the rest following by snapchat/facebook tied and twitter lagging behind with 300 million plus active daily users.
