Unlike any other trading environment, you can make big profits in this crypto space just by holding for longer duration. Just plan up trades for years (but within only bitcoin) then definitely you will get at least 10x profits for your investments.
About at least a tenfold profit in bitcoin over the next few years sounds quite bold, because at the current exchange rate, we are already talking about $ 600,000 and I personally am not so sure about this forecast 
Another question is that you can try to wait for a correction and make a purchase at a lower price. I would be more confident about such a price forecast in altcoins, but there are pitfalls and instability of much larger orders.Yup in this time and date, btc can just accumulate about maximum of 50% if you will invest right now, unlike in altcoins, tho it is riskier, but the profit is higher than normal. But aren't we, traders, common to risk plays and isn't it our playground
They use big money to invest in a coin but they do not research more about the coin.
But if they only use bitcoin to trade or invest, they can have a chance to make a profit and if they can hold it for a long time, their profit can be big.
The best thing that we can do is buy low and sell high or buy low and hold if we want to profit.