50-60
60-70
70-80
80-90
90-100
I personally don't think it's possible to decide now , we should at least see what's going to happen after the halving block reward and how successful OpenBazaar would be .
I think so. besides, we need to know what percentage people is owning bitcoin now. maybe it's possible to count it by formulas.
There might be 500,000 own or use bitcoin. If there are more than 5 million people use it, the price will be 100 times higher.
If there are more than 5 million people own or use the bitcoin, there will be fewer than 4 bitcoin each for them.