Please enlighten me: What kind of monopoly would that be? Much as I detest an awful lot of Google, I have never once been - and know of noone else who has ever been - forced to use their search against my will. In fact, I get along fine without it, as well as without their analytics and their browser and their cloud stuff, excepting of course that I am often forced to correspond with gmail addresses.
This is not about Google having a monopoly but about Google abusing a dominant position. And even if it were about monopoly, whether or not you are forced to use a product or a service is not what determines if it constitutes a monopoly.
Compare the laws here: EU (http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:...) US (https://www.law.cornell.edu/uscode/text/15/2)
And whether or not you are forced to use a product is a large part of what it means to have a monopoly: https://en.wikipedia.org/wiki/Switching_barriers