Semantics.

Founders building potentially billion dollar businesses (not $10m lifestyle companies) need to have a psychotic drive to achieve that goal.

That often creates tough work environments in the early stages of the company. To many people, failing to build that billion dollar company is the same as outright failing completely. They’ll do whatever it takes to get there. I’ve worked with engineers and designers that like this type of environment. I’ve worked with others that thought they did until it came time to actually pull an 80 hour week.

EDIT: Several downvotes, but only one reply. If you have issue with anything I said I'd appreciate a response.