The hard part is that on the current curve the earth will have 8, 9, 10, 11? Billion people if we can manage to feed them.
At some point the number does become problematic.
I am certain God has a plan. But ...
Where there has been a need, there has also been a way. Enough souls willing to work to establish infrastructure (and not all are in all places, which is a problem) will help bring to themselves what is needed.
Your right, God does have a plan. There is plenty of room on the earth to support people. However, there is not enough money to subsidize illegitimacy and freeloaders. Democide is one of the leading causes of death in the last 100 years...