If many bitcoin holders do not sell but continue to uy more or Bitcoin is allowed to use as digital currency in payment.
it will rise up at once and it will hit 2,000$ after then, guy.
In your situation, when everyone hold and wait for $2000 to sell, the price will drop dramatically after people start selling. Bitcoin is mostly viewed as investment asset, and people sell when they see their comfortable profit. But if more people will be using it as money, we will see more stable and bigger price.
If people will think with sense and they do not sell their bitcoins for fiat and will continue to support bitcoin for life time and start to use it as a form of another currency then it will not drop after reaching the price to that value.