"Who would work for such a company and why?"
Anyone starving. For many, it's far preferable to be working for Evil, Inc. and put food on the table than to be starving in the streets. There's a self-preservation instinct, you know?
"Going along with the status quo just because there is no alternative, is never going to solve the problems. Is it?"
Sometimes, one has to admit defeat and declare a problem intractable (or at the least, infeasible given the conditions). For example, hoping for a government that cannot be corrupted is considered infeasible given the human condition (the self-preservation instinct inevitably leads to corruption, which can occur in any form of government). So too may the status quo be an infeasible problem if the only alternative is to go without which in so doing leads to serious disadvantages.
So basically, while one can walk away, it's hard to walk away from the only watering hole within line of sight.