The value of bitcoin can be expected to at least double with every new cycle, along with the number of people using bitcoin.
Even assuming there are 1 000
BTC users right now and double the number each halving we will end with 268,435,456,000 users by the last one!
Also the price of one
BTC would be $16,106,127,360,000.
Global wealth is at around $454,385,000,000,000, less than 30 coins.