Why is it not profitable? The projects in the top 20 coinmarketcap are always growing and profitable for investors, but it takes quite a long time for it to grow. And investors need to be patient enough to benefit from them
It does not always takes long time for all the coins. For example just consider ETH. It has grown enough in the past 3-4 month. From 200 USD to 450+. What else one can expected from any kind of investment.
That's because we are in a bull market, and the price went up strongly in the short term. But if you invest them in a bear market, I believe it will take you a long time to make a profit. Btw 3-4 months to get 2x profit is actually quite a long time, other altcoins can give you the same profit in just a few days