If you cast your bread upon the water and you have faith, you'll get back cash. If you don't have faith, you'll get soggy bread.
If New Orleans is allowed to die, a crucial part of the world's music heritage will disappear.
Moreover, the practical recommendations deduced from ecological principles threaten the vested interests of commerce; it is hardly surprising that the financial and political power created by these investments should be used sometimes to suppress environmental impact studies.