Just imagine the marketing possibilities for these companies, owned 100% by Berkshire Hathaway.
"Switch to GEICO, and help global health!"
"Jordan's Furniture: Where your new living room can help cure diphtheria!"
"Acme Brick: Rebuilding libraries, one brick at a time!"
"Helzberg Diamonds: 30% more likely to help cure AIDS than other jewelers. (Except for Ben Bridge and Borsheim's.)"
...from The Motely Fools