Most likely, bitcoin will experience development which we can monitor together. I'm very sure at that time bitcoin will develop into a payment network like in Japan. As we know, bitcoin's currently used more as speculative and investment assets. Along with the increasing utility of bitcoin, the price of bitcoin will also increase dramatically. And at that time the tax system would be a big problem for some investors. My hope's, bitcoin can continue to maintain its value like gold and become a currency which can be accepted by all countries.
Bitcoins price will rise soon, as there are only a limited number of 21 million bitcoins available in the crypto market and due to high demand in the market there are still possibility for the rise in price of bitcoins, currently there are only around 16 million bitcoins are in circulation and due to halving after every four years the level of difficulty of mining bitcoins increases which means after every four years number of bitcoins distributed to the miners for mining will be cut short or decreased so it will take more than 150 years to complete the mining of bitcoins. The price of bitcoins will definitely rise with a huge leap in the market, the price of bitcoins affects the increase or decrease of altcoins as bitcoins are the first crypto currency in the crypto world.
If we all can see this indication, it looks like 2019 can be an active year for bitcoin and other cryptocurrencies.
but I'm sure the market price of bitcoin will rise by itself.
If there's no purchase action, I think unlikely the value of bitcoin will grow on its own. Because buying's the only way, the absolute can increase its value.