It is impossible for anyone to know the price of bitcoin in the next decades since bitcoin price is unpredictable and past record is not a guarantee that the future will play out the same way.
Your absolutely right and thanks for pointing that out for Dailyscript and other investors who might have misunderstood that part. The probability of knowing what the price of Bitcoin is 0%. We can analyze and with our analysis make predictions on what it may be. Either being idealistic or realistic but all is full of speculation. Our expectation may come through at the end of the day but that doesn't mean we were certain of the price of Bitcoin in the next few years. True investors will know that the value of Bitcoin would worth more in the future, the price is unspecific but sure its going to be worth more in the future.
It is true that we can't know what the price of bitcoin will be in time coming but even though we are making speculations based on it's current price movements and it's price activity in the past, but it is also good to have some understanding about some of the characteristics and factors that leads to it's price movements as it will help to evaluate if the price will likely go upwards or downwards in the future. Speculations are not just mere guesses as it may seem but combination of both present and past price performances which even if it is not accurate in the future but it can be close to being accurate and this speculations are also what gives investors hopes and confidence about their investment.
We are not just guessing about the future when it comes with bitcoin, since we have certain certain things to look forward on why price growth is possible for this coin.
This is the certain factors I see on why bitcoin have great chance to pump in future.
Halving
Adaption either with government or also with business institution
Mainstream media exposure
With that having that price upper trend is inevitable, we see it happening before and we provably see that to happen in future especially that right now bitcoin gather lots of attention and recognition. Bitcoin is not just an speculative asset but it has certain basis that good growth is going to happen. Positive changes creates good demand and this is what make bitcoin as strong currency.