Short Term Impact
As for the impact of the Beatles, there's very little to look at in the short term. For a time, they were the best-selling band in the United States, while the Soviet Union was threatened by them and jailed many for having anything to do with the band. While they did slightly propel Ono's career, she quickly fell into obscurity, too, and is now only famous for being Lennon's widow. Many disliked her singing, being parodied multiple times by TV shows such as "Pinky and the Brain".