Simply because the WHALES take the profits whenever there's a 5 to 10 percent growth. The bottom line is Swing trading and Day trading is real and the HODL method is just what it is...
Once the market become bullish again those whales can't do something about it, they can't still beat a million investors that want's to buy and hold bitcoin. I'm not being too optimistic about bitcoin but what i am just saying here is that whales will never control the market forever.