There's a saying "the more you look, the less you see" but it's not that effective in this context but similar because in trading you put up high hopes to attain something profitable, however you are risking to get what you want but sometimes it doesn't give you the outcome you prefer or predict that's why it's necessary to trade wisely.
Number of traders are increasing but that doesn't mean they all are successful. Trading is not any thing to handle and those who just start trading with mindset that they will become rich in few days are the one who bear heavy loses. I don't say that trading is like gambling but majority of people who start trading, ended up in loss and that's something similar to gambling. It's a risky thing and one need to plan how to minimise risk associated with it before starting it.