For it's size, Skybus was very well capitalized - somewhere around $175M. Unless Skybus' investors (IIRC, there were several Columbus businesses that provided the startup money) pull their money, I don't see them going away any time soon.
Its called "cashing out". When gamblers are losing money at a table they take their money and walk. The same goes with airline investors.
I see lots of propoganda about the "corporate rat" and how it is us vs. management. But, they are the hand the feeds us. Be careful how hard you bite.