If you want to fly a plane, you are required to speak English if you go outside of your country's airspace. If you are the pilot of a boat, you are required to speak English. If you want to program using any popular programming language, English is the default choice again.
The top 5 largest international companies on earth were founded by English speaking companies. 60% of the world's largest international companies were founded in English speaking countries.
Countries can be as insular as they would like to be- within their own borders. If they wish to communicate, fly, boat, make money or otherwise have meaningful communications with other countries on a large scale basis, then that language is English.
If you want to fly a plane, you are required to speak English if you go outside of your country's airspace. If you are the pilot of a boat, you are required to speak English. If you want to program using any popular programming language, English is the default choice again.
The top 5 largest international companies on earth were founded by English speaking companies. 60% of the world's largest international companies were founded in English speaking countries.
Countries can be as insular as they would like to be- within their own borders. If they wish to communicate, fly, boat, make money or otherwise have meaningful communications with other countries on a large scale basis, then that language is English.