Yoko was the catalyst more than cause.
True, of course.
Imagine the life of being on top but if they visited Denmark could they stroll around and look at the castle and sites? No, under security and police guard. As with every other minute. “We are our only friends and family now” was said to each other in confined hotel rooms at the start of their fame.
Has to be difficult to sustain but the Who and The Rolling Stones made adaptations. Pete Townshend: “It’s down to just two of us, Roger and me. One of us will die and the other can tell the full history from their point of view.”