It's not cycling it is in everything. Last year on holiday there were two young German couples and they spoke to each other in English, which seemed very strange.
I disagree that it harks back to colonialism. My thought is that we are all speaking American, not English. The US is the dominant force in World culture over the past 70 years. American is the standard language in International travel, films, television and music stem from there and pervade all delivered entertainment. I had a discussion with another German last year who agreed that if say the invasion of the North American continent had gone differently and the Spanish had struck out and settled in the main body of America then we would all speak fairly good Spanish and English would also be on the wane.