In this year January btc price was $800 $1,150 and now it is around $7100.Can we imagine it will increase like this year?
At first, I honestly didn't expect that it will increase as this high. The continuous increase on the demand that it is getting from the market as more countries are making it legal, made this possible in my opinion. It is now already expensive, and there's still a possibility for its value to be more expensive because of the fork. And maybe in early 2018, it will be already priced at 10000$ if the segwit2x in November will be successful.
I think that the opposite. If segwit2x will be successful then we will get two coins which are in great demand. This leads to the fact that the capital now invested in a single coin can be divided into two. No matter in what proportion. If the price of bitcoin will not drop we may be faced with the fact that the price growth will stop.