Eventually, we get to decide to quit our jobs if we are not happy anymore and I just did that a month ago. I quit my offline job and got a job that I've always wanted. It's really true that if you want to quit your job you must be prepared and plan ahead to sustain your daily living especially if other people or family members are dependent on you financially.
I so agree that people this days are getting 20 years younger mentally because we are more flexible right now and we can easy adapt to our environment these days.
Well, that depends on how much a particular investor invested and I think there's no limit on how much investor should a start up have. You can still be considered a start up no matter what but I guess this would lead to an overfunded startup considering the investors' head count and the amount that they will be investing.