Amazon, Google, Apple & MS are companies from US. Sony is from Japan.
They all are market leaders with some product in different markets, including having -or almost- a monopoly in some cases.
The goverments don't do anything against monopolies because there are the market regulators for that, and the competitor companies (not the government) to fight for these markets, if they can/have enough strength to do it. Governments can only implement some side policies that benefit the interests (of the big companies from) of their own country.