The market can only do one of two things. It can go up, or it can go down.
In literally speaking you have a point, but logically the problem with this investment strategy is time pressures. The speculation and panic by waiting with many news going around like crazy is killing them inside.
No one must be a loser if they only have the patience or the willingness to believe in to its future, but humans have the tendency to think negatively in a span of an hour.
Time and money with greediness is disastrous.
True, that is why trading can be so difficult, it is very easy to see a chart of the market and think about where you should have sold your coins and where you should have bought coins but all that calm and calculated nature goes out of the window when people are in the middle of the situation and they need to decide, do they buy coins now or do they wait for the price to get better? Do they sell now or do they wait for the price to go up even more?
Those are the questions that are going to cross your mind when you are trading and inevitably you are going to make some mistakes because we are not perfect and are precisely those mistakes what it is going to eat you from the inside and you are going to try to make up for them the next time you make a trade only to find out that that doesn't work and that you have made a small mistake even bigger.