Who Pays the Drilling Company With What?

OK, my sidewalk does not go all the way to the front porch sometimes. If mineral rights are owned by a group of people who get royalties, then how did your example get their 80%. How did a company ever get 80% of the mineral rights in the first place. This said, then mineral rights entirely owned by individuals would NEVER be drilled on then? The money does not just appear, it has to come from somewhere to pay the driller