I think rich investors can wait for bull market but small investors can't because they have less amount of money. So if we want make money from crypto then trade is the best policy for making money. If i have million Asset then i could buy more token and wait for bull market.
Yes you are right. There are some people who sell the invested coins when they need their money after investing. But we always have to remember one thing if we want to trade we have to be patient. If we lose patience after investing. If we sell the coins, we will not make a profit but face a loss. So we always have to think and then buy and sell the coins.