Odds of Hanging On
If you do make it big, better save up as much as you can, because the lifespan of a pro gamer is short. In some cases, really short. There are gamers whose lifelong goal was to get onto a particularly high profile team and live in the infamous "team house," only to get their dream and have it taken away within weeks after a couple of off games.
In esports, as in other real life sports, you're only as good as your last win. If you stumble into a losing streak, your sponsors will drop you like a hot potato.