If that's what you took away from the book then I'm afraid you did a shallow reading of it. Animal Farm was specifically a critique of Stalin and the USSR, and how Stalin hijacked the revolutionary vanguard and turned it into a fiefdom for the loyal party members.

Orwell himself was a left anarchist and staunch antifascist and anticapitalist. His critique is that of authoritarianism. If you take away from Orwell that he supports capitalism in any form then you may have missed his point.