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.