It's difficult for me to reason this sort of thing. Success, or even just being able to scrape out a living from art seems like a lottery. That is, there's not really any strong correlation between talent, effort and success. Plenty of starving, yet talented and/or hard-working artists. And plenty of successful artists with less talent or effort than their starving peers. So in this case, pushing for an environment that allows for bad periods is really only trying to improve things for those that won that initial lottery.