So if the Sellers create artificial scarcity in the Bitcoin market by holding the coin and the buyers are surplus then the price will shoot up. So let the Bitcoin sellers create artificial scarcity in the Bitcoin market.
A flaw in your thinking is that holders of bitcoins gain no benefit from those bitcoins until they sell them.
Holders cannot not both create artificial scarcity and realize gains at the same time.
Now, suppose there is some coordination of holders, and they agree to refrain from selling in order to drive the price up. They will have to sell at some point to realize their gains, and this selling will drive the price down. So, buyers knowing that the price will eventually fall will also refrain from buying until the sellers start selling. The result is that the artificial lack of supply is matched by an artificial lack of demand, and the price doesn't rise as holders expect.
In the end, there will always be sellers.