The point is some companies have an income in France even thought they have no offices in France. Google for instance sells ads for the French market but they sell it from abroad. Then they say google.fr is an Irish company and they won't pay their taxes in France.

They USED to be a monopoly - that was one generation ago, and internet did not exist back then (at least not for 99.999% of us). Now, they still have a significant share of the market as their share is like 43% of the internet customers.

I am French -- My ISP is FREE (that's their name) and I pay 36 euros a month. I get all you mentioned above PLUS they sent me a SIM card that provides two hours a month of voice (including call to 40+ foreign countries) and unlimited SMS, also, I can access the net throught that SIM card using wifi... wherever an open (unlocked) wifi net is caught.