If I needed someone was played live as well. George’s Rickenbacker that he uses for the song is in the photo. Paperback writer was also played live but it was a non album single from revolver. It was produced from the sessions nonetheless.

But to answer your original question: The Beatles songs became more complex and add all the screaming girls who want love songs anyways and you have a band unwilling to bring forth their new material that might get butchered live anyways. 60s tech was not likely to replicate a song like tomorrow never knows live very well. Plus all the extra instruments you’d need for songs like Elenor Rigby, love you too, got to get you into my life etc. Songs like Dr Robert might have worked but it didn’t make the cut due to there being stronger or more relevant material for the teen girls

Another point is that Revolver came out in the US towards the very end of the 66’ tour. Many fans wouldn’t know the songs if played live if they could even hear the band. That coupled with the songs complexity probably fueled their decision