Musk is the richest man on Earth, give or take a few billion here or there. He can keep it running as long as he wants. It’s nothing but a toy to him. The problem will start when he finally gets bored of it, because he has already broken it to the point that nobody else will want it. He has killed it, it’s just not dead yet as long as he keeps swinging it around and paying its bills. But one day he’ll stop doing that, maybe once he finds a new, shinier toy. We just don’t know when.