The Beatles realized that what they were making in the studio could never be performed. And they had already given up on performing because there were too many screaming fans and they were playing in larger and larger venues so they couldn't even hear what they were playing, it just wasn't any fun any more.
I got myself into a lovely little shall we say controversy with André Breton, by pointing out that the discipline of spontaneity, which he was asking his surrealist neophytes to adopt, was new for language but something that composers had been practicing for centuries.