Although we do not know when the bitcoin price will reach $1M, we need to make more and more bitcoin before it is too late to do that because if the bitcoin price starts increasing, we will hard to do that.
I also believe that the bitcoin price will be at more than the price now and will reach $1M in the future and who knows, that price will not take too long to be reached so we can make a big profit from bitcoin.
I agree with what @Shasha80 said that we need to collect as much bitcoin as possible so we are ready to sell bitcoin at a high price.
I do personally believing that bitcoin has the potential to reach its market exxhange rate at $1Million we may never when but hopefully it will.
I am very much positive that any predicted amount were possible to happen (let's include a red market tag of bitcoin) because of the characteristics of bitcoin being volatile.
I just remember way back three years ago when I first entered here in bitcointalk, there are also a thread asking about if bitcoin will be possibly attain $20k because at that time bitcoin price got dropped to a more than $3k but now here it is bitcoin presenting itself having a market value of $56k.