Bitcoin is a volatile asset and so there's no guarantee that you will get 2x or above that amount from your investment at the end of the year. Realistically, thier might be years when we are not all that profitable with our investment and Bitcoin might remain at a certain range of price for a long time during some years before we tend to see anything close to 2×, 3× or so as you may have it.
That's basically the whole essence of long term investment and the application of the DCA methord in doing so because while you're investing for the long term, even when you don't see yourself in a good profit at certain time, you just take it as an opportunity of buying more Bitcoin and to continue doing your DCA till you reach your accumilation goal.
The price of Bitcoin can never remain stagnant for a longer period, Bitcoin is not a stable coin and therefore it would always experience volatility, but the good thing about investing for a long-term is that the investor would always recover their lose from any dip whenever there's an upsurge and that's just it, an investor mustn't wait to make 2x or 3x before they'll say they've profited from Bitcoin, the profits comes periodically at every upsurge you encounter while using the DCA method, investors should understand that Volatility is never a problem for long-term investment with DCA so far they go funds to continue buying.
You are absolutely correct, some people think that since DCA is the best and reliable strategy that success is sure or certain not knowing that they are the one that will make the strategy work. Someone's success in Bitcoin investment whether using the DCA, lump sum, buy Dip depends on the investor's consistency, discipline and the ability to manage investment and I want to let us know that every individual has an atom of management skill in them but is just left for them to build or grow it.
An investor would only be successful with the DCA method when they maintain consistency and carry out discipline in managing their investments, infact those are the basic things every investors are supposed to understand while o their investment journey. One thing that's been repeatedly been talked about concerning Bitcoin investment is that volatility must always occur therefore every investor must experience lose along the line but then the DCA method enables investors to recover your lose when there's an upsurge and so far the investor continue buying periodically using that particular method for a longer period then success is definitely guaranteed.