They would be better off investing in breeding horses and building carriages and wagons.
Then they’ll complain about horse farts
A documentary narrated by Bill Moyers had the 1890s prediction by leading university scientists that due to coming population growth, large cities like New York would soon have such large increases in horses for carriages and wagons that the gallons of urine and pounds of feces will overwhelm the cities. They predicted there was no way out.