Orwell Knew That Ultimately, Socialism Could Not Work.

"In addition to this there is the horrible — the really disquieting — prevalence of cranks wherever Socialists are gathered together. One sometimes gets the impression that the mere words 'Socialism' and 'Communism' draw towards them with magnetic force every fruit-juice drinker, nudist, sandal-wearer, sex-maniac, Quaker, 'Nature Cure' quack, pacifist, and feminist in England."

• The Road to Wigan Pier (1937)
• If you do not believe that he could have finally rejected socialism - which he certainly did - note the beginnings of that move in 'Animal Farm' and '1984'. He moved towards anarchism at one point before rejecting that too. What beliefs he finally ended up with are anybody's guess.