With the standard strict definition of a douche i don't think it's possible to lead a successful company without having a portion of your employees think you're an ass, not everyone sees your company direction from your point of view therefore releasing some employees, reassigning tasks, canceling projects etc... might trigger such kinda vibe that you're a douche, that's one of the reasons why most successful company leaders in our recent history are known to be like that if not widely then at least among a closed circle to some extent, being a strong manager comes with a high cost, taking powerful decisions that not everyone approves of.