It just takes more money, and it's such an enormous area of land with such fantastic resources that the little explorers have to be given the freedom and latitude to go and have a look to find out what's there. Then it has to be reasonably expensive to investigate the promising finds in order to find out if there's a big enough resource to interest a big company that has the financial backing to go in there and put a road in because what they've found is so valuable that the road is a good investment.
On December 5th, 2011. See this statement in context.