Working that hard for someone else is stupid. Unless you hold the reins, I wouldn't expect management to suddenly have their hearts grow 10 times larger at the expense of their own compensation.
I’d rather spend 10h a day 7 days a week pouring efforts into my own assets, or towards my vision, and not for someone else’s assets or vision, especially if I have no say and stake in the high level decisions (like sale of the company).