When you don't sell them you are signaling to the market that you value them more than the $11 - hence you are buying them.
No, buying is buying ... not selling is not selling. If someone gives me an apple that they grew, I didn't buy it.
But if that same apple would be sold at the market for 2 dollars, and you could only get apples at the market, that person can either give you the apple or two dollars. Same same.
Its not the same, because one affects the market price and one doesn't.
If I hypothetically mined 1,000,000 BTC today, the market cap would increase by ~$11,000,000 but that does not mean $11,000,000 was absorbed. If I tried to sell it on MtGox I would destroy the market.