There aren't more US users than non-US users. Also, it's not quite correct to say it's a USA invention. A lot of the foundational work was done in France for e

There aren't more US users than non-US users. Also, it's not quite correct to say it's a USA invention. A lot of the foundational work was done in France for example, it's just that the French politics killed the project in favour of circuit-switched networks, while DARPA picked it up.