Curious thing about calling people low balling hacks. I have had a local competitor that has said I am a low balling hack. It appears that he does not take into account that I have been at this for twenty years, and can clean faster with a wand, with better results than many can with a surface cleaner.
My opinion, is that there are times when nearly everyone is a low baller. If you do stuff that is not on maintenance, you will without a doubt run into projects that are, for one reason or the other, be worse than you thought originally.
There are also times when I make an obscene amount of money, because I have the equipment, and the contacts to do those specialized jobs, and make an effort to market it.
Poor work is inexcusable, but everyone has their moments of low balling, and if you don't, you have not bid on enough projects.