Built-in power of Bitcoin (BTC) is that it is deflationary in the long term. There will never be enough BTC for the whole population. Though the current mode is inflationary (small increase with mining), the demand due to network effect and publicity outpaces any selling pressure. Moreover, HODLers are are not selling either due to FEAR-of-seling-out (FOSO). Though most of innovations are taking place in start-ups (ICOs), altcoins (steem) and blockchain tech, BTC is taking the credit being the flagship and leader.