I think the main influence of the Beatles was to change the way of the music Industrie.
Actually the situation before was very much a 7'' vinyl single market, with LP fast being Collections
of single tracks to cash in a second time. The habit of Prog bands to have subtitles on epic tracks
comes also from that time where you have to had 12 titles on a LP to receive full royalties (otherwise
it would be just rated as an EP, no matter how long the playing time really was).
Of course the Beatles weren't the only ones, but very important in changing the view on LP's as
an true album format instead of compilations.
Also they where among the first to break with 2 to 3 minutes song lengths (in that genre) and to
introduce synphonic elements and sound experiments into their sound.
I think it's legit to say they where involved in setting the ground for the things that happend later.