It's not fair to say GoPro has failed simply because investors and traders had unrealistic expectations. The "action camera" market was already saturated in 2014, and it's hard to imagine how they would continue growing at their previous rate when they're selling replacements and minor upgrades.

It's possible they're in the process of failing, but it wouldn't surprise me if trying to meet unrealistic expectations caused a large part of their problems.

I think at this point the worst case scenario is that they get bought out by a bigger electronics company because their name brand alone is worth quite a bit.