yes surely bitcoin can reach that 2000$ mark. I think it will reach 1000$ at the starting of 2017 and so till mid 2018 we may see btc price to reach that 2000$ mark
It can and it will happen, but not before 1 or 2 years. The price first needs to get pumped to 800 dollar.
With 800 dollar we may see it go up again to 1k.