Is Uber the only tech company using unethical and immoral practices to take out the competition? or the only one to be caught? (Not asking as a defense for the

Is Uber the only tech company using unethical and immoral practices to take out the competition? or the only one to be caught? (Not asking as a defense for them, I'm just curious, and cynical, I believe they all do this, but thats an ignorant belief as I dont know)