>These guys want to make video games. Maybe that's enough to make it work and maybe not. Time will tell. But by the logic of #3 we should all just do whatever puts money in the bank. That argument quickly devolves into a lot of would-be entrepreneurs sulking back to jobs they vowed they would learn to live without or building companies that are temporary money making opportunities, not something worth the devotion required.
I'm all for taking a smaller paycheck, or running a business that pays below your market salary, to do what you love. If you're only putting yourself out, and you can keep it up, then by all means live in a shack, or your car, if you prefer that to what you would have to do to earn more.
But at the point where you're taking money from your parents, relying on your friends' hospitality and giving them nothing in return, you have failed; give up and go get a real job.