Why populate those areas? If you don't want population control you will need to warehouse people as efficiently as possible.
Manufacturing can be done in highly concentrated locations (China is showing us how). Agriculture doesn't require very many people anymore, same with mining and forestry. Cities are the only way to deal with hoards of people.
Plus you're still just kicking the can down the road a few decades. Eleven billion? What happens when that doubles in another few decades, then doubles again? It can't go on forever.