The fact that they had an idea, built it and executed their vision successfully enough that another company bought them out are the bits that matter. That the buying party was significantly reduced in value after the acquisition is not their fault, and even if it had not it would have been stock (likely with all kinds of encumbrances) not cash.
Doing a stock deal is risky at best and can end very bad for the acquiree. Assets are not money, stock is not money, even so for a 17 year old that was an absolutely amazing track record.
I'm not clear on the details of that particular deal, and frankly I don't even care. All I know is that most people here would dream of doing a deal like that or even being in the position to make that particular mistake, and hindsight (the company acquiring tanking shortly thereafter) is 20/20.