The point is not about living under a bridge or starving, the point is that this should be considered equivalent in most terms (except tax-wise) to earning your market-rate salary and choosing to invest 2/3 of that cash into the startup.
No matter how much you have left, the consideration of whether it's a good deal or not should include that choice to "spend" that amount of (potential) money on the startup versus whatever you would have done with that money otherwise. If you wouldn't have done anything, then there's choice of spending a few years on the startup versus having, say, half a million of savings for retirement.
No matter how much you have left, the consideration of whether it's a good deal or not should include that choice to "spend" that amount of (potential) money on the startup versus whatever you would have done with that money otherwise. If you wouldn't have done anything, then there's choice of spending a few years on the startup versus having, say, half a million of savings for retirement.