The amount of bitcoin I own is not the same. It’s less because I sold bitcoin. The math is identical whether you are dealing with positive or negative numbers. 

Suppose I decided not to buy a mini van. Suppose instead I took out a home equity line of credit and bought bitcoin instead. Then instead of avoiding a loss of bitcoin, my stack went up. 

Whether you avoid decreasing your stack or increase your stack by using someone else’s money, it’s still a yield if you denominate in Bitcoin.