>>128058812
It's no so much about the anglos, you see? The language becoming world's unofficial língua franca is vital for how pop music benefits from major English countries, but it is more complex than that, it has to other things too and even the world wars, that shaped Britain and the US as the guys, fairly though.
Spanish music did and what some point will become as relevant due to Spain's strategic relevance in europe and Latin America's sheer size, but the relevance that the United States and Britain have won't disappear from night to day and then other countries such as Canada, Brazil and even Japan and Korea to a considerable extent have millions of people who are into the same connection and using the English language for music.
Long story short, it isn't so much and the language itself but the geopolitical context of the world and it'll remain so for some more centuries I hope.