Even strong hands get weaker over time. Gravity.
I suppose your comment has merit. But I think that it isn't a completely proportional concept to price rising.
When the prices rebound and remain stable strong hands get stronger. As they can expect to know the price is going to rebound as it has so many times before. Hence the load the truck with more bitcoins even though the price has risen over 1000% in a year.
Right? I mean gravity is strong and all, but not compared to a motherfucking rocket ship.