There are plenty of cameras with the same durability and image quality as GoPro for much less money as well, and many of them have better mounting systems. Just not as well marketed.

Sony, Drift, Contour are some major names that come to mind. When you get into second tier such as SJCam and Dazzne, you have almost exact copies for 1/2 to 1/3 the price, and the durability seems equivalent.

GoPro helped popularize action cams by spending a ton of money on marketing, but in the end it's a competitive market, and they really can't continue to sell product for 2 to 3 times what competitors can and stay in business. So they're either going to have to cut back on the marketing that requires them to maintain those profit margins, or just continuously produce really significantly better products (and have a market for those better products - no point in building an awesome new, industry leading feature if nobody needs that feature).