Now what happens when demand increases and supply decreased? Very good, price goes UP... making it profitable and worthwhile to grab sand from under the water, at ever-increasing depths.
Why must Liberals make everything far, far more difficult than it should be?
A side benefit of getting sand from the ocean bottom is it will lower the sea level and save humanity!
No supply and no demand is legitimate unless the government directs it and plans it. The true shortage is that of Government Experts.