This topic should be moved in the "Speculation" category.
If Segwit2x is successfull and bitcoin transactions become cheaper and faster(or even instant),BTC
will rise to 10K USD.Reaching 50K USD is doable during the next 5 years,if there are no major hard forks and no dirty government and central bank tricks(no attempts to destroy bitcoin).
This is true. The August 1 or what will happen in August will be the next page of btc and if sucessfull, the price will be double or triple. The 2018 mark on 5000 dollars is just a speculation and I think government and other corporations will take btc seriously if it hits the 5000 dollars and above and they will try to enter it's world and this will be a tough battle on both sides.
Government can make a big impact like making btc illegal or make media to try to destroy btc and I hope that won't happen.