I agree mining is no longer profitable being the difficulty exponential; this will lead most people stop investing on hardware and begin putting all their money on coins, which will eventually make the price go up and then explode. Gotta be careful when thinking on a long term, I also think on altcoins as pressure escape valves, everything will be pretty interesting on a few years from now. Although is hard to establish a bitcoin based business nowadays I believe innovation on this field is what can lead to the biggest earnings.