The owners - they should not be running a company, period. They hire people and think it gives them permission to treat them like non-humans. They have no respect for anyone, other than potential clients. They lie to current clients and ask their employees to follow-suit, they take on impossible projects and disappear on vacation or go out drinking when they are needed. They have no regard for anyone but themselves. They allow their employees to work continuously in unhealthy, unsafe environments and do nothing about it.
They pay you the absolute minimum wage they can, expect you to do the work of a full team of people, and expect you to be grateful to them. They hire friends and family who have no clue how to do anything aside from tie their own shoes, if they can even manager that. Poor management. Poor organization. Borderline abusive work environment and practices.
They have a tendency to take on all sorts of projects with which they have absolutely no clue how to do effectively. They low-ball the price so they get the job bid, and then disappear from it altogether while giving no one on the project any information on how to actually do anything. They go out to dinners, for drinks and on vacation while their employees are drowning in the sea of crap they took on. You have this attitude that everyone is beneath you, only your time matters, and you are the smartest people in the world and everyone else is an idiot.
You can go into this job with a extroverted, happy, sunny disposition and they chew you up and spit you out as an angry, miserable person who feels nothing but exhaustion and hate towards other humans.