4% of the planet. If 4% of America spoke a language, most of us wouldn't be in much of a rush to localize. You're implicitly assuming that the remaining 96% of

4% of the planet. If 4% of America spoke a language, most of us wouldn't be in much of a rush to localize. You're implicitly assuming that the remaining 96% of the population is speaking another language which is untrue in your analogy as the world population speaks more than one language and the largest one in terms of number of speakers goes to Mandarin with around 15% of world population.