I've enjoyed reading comments from both sides of the GPRO camp, and there are two distinct different sides for sure.
I like the product and think they have the best thing out there...right now, but Greg is right in thinking that someone else may come along and make a better product eventually. To me this is about the difference between getting paid back for prior success vs continuing to create new success. None of us have any idea exactly how GPRO is going to be going forward...that is the gamble.
Now, there is also another factor in this...and this has been my bugaboo with the stock market as a whole for a long time now. Success as a company is one thing, success in keeping the company's share price high is completely different. If the naysayers of GPRO are eventually successful, Mr Market can tank the stock regardless of whether the company can stand on it's own two feet or not. This is where the CEO has to stop working in the company and start working "On" the company. He has to make the rounds both on the air and in private and keep on convincing the institutions that GPRO is a worthwhile investment. So far, I'm not sure he has been successful at this, maybe he can learn on the fly though.