Sasuke would still have become strong but not as strong as he is now. He would have learned the basic of the Sharingan from Kakashi and then eventually discover other things on his own.
He wouldn't have become strong enough to go toe to toe with Itachi though. That's the main reason why he chose to leave
He wouldn't have become strong enough to go toe to toe with Itachi though. That's the main reason why he chose to leave