If you know exactly how much money will be invested into bitcoin (net of sales) by existing and new users, you can work out the future price. The answers is in this equation: money/650’000.
The latter figure (650’000) corresponds to the newly mined supply over the next 12 months.
As far as the figure for “money” is concerned, you can take last year’s new money, or October’s new money times 12, or you can you compound compounding based on any previous period, - of one month, three months, one year.
Whatever of the above methodologies you use, you will like the result. This methodology only works if you assume that existing bitcoin holders are indifferent to price changes, and are neither buyers or sellers, or that buying and selling by existing holders cancels itself out.
