Jon Gray said he's never considered leaving Blackstone. Bloomberg/Getty Images Blackstone's president, Jon Gray, said bigger firms offer a lot of opportunity for growth. Gray said hiring, firing, and promotion decisions are key to a company's growth. Some have said young employees should opt for smaller companies, where they can maximize impact. Jonathan Gray, the president and COO of Blackstone, said large companies offer a key benefit to ambitious employees. Gray, the president and COO of Bl