It's not at all that they're heartless & they certainly don't want me to be unhappy. They just didn't give me money so that I would use it to have fun and be happy. Happiness is hopefully a side effect of a successful venture.
I am pretty sure that if my company is not moving forward and the ROI is not looking good for investors - then they will not be first and foremost concerned with my happiness. They don't want me to feel miserable, but they certainly don't want to see me playing ping pong and drinking PBR all day if the company is not moving in a positive direction.
I think a better question an investor would ask would be "are you still feeling optimistic" or "are you happy with the direction we're going, our progress, etc" Not just am I personally feeling happiness
The investor could decide to invest more and spend it on improving working conditions, but they choose not to - after all, the suckers have confirmed that they are happy with the conditions!