Of course, you can make more money by trading and investment. In trading, you can earn a lot when the price pump as well as in investment, i believe in holding that it can give us a great profit as long as btc price rise again.
Well i agree with you, people can make money with cryptocurrency if they will do investing, and people can able to make more money if they will invest when market is red or when the value of all coins is low, and people can totally make more money if they will invest on the best cryptocurrency and that is bitcoin.