Bloomberg:  “Ice cream, candy and soft drinks helped make Warren Buffett a billionaire. Now a subsidiary of his Berkshire Hathaway Inc. is seeking to profit from pot.  Cubic Designs Inc., a unit of Berkshire’s MiTek business that makes platforms for maximizing usable floor space in warehouses, sent about 1,000 fliers to weed dispensaries in recent weeks, offering to help growers expand the number of plants they cultivate.