The founding family of 7-Eleven’s Japanese parent company has failed to secure the money to buy it out, the company said Thursday, months after they launched a bid worth over$ 50 billion to fend off a foreign takeover. Seven i Holdings, which sits atop a vast network of 85, 000 convenience stores, primarily in Asia and the United States, said in a statement that it would assess alternatives, including the proposal from Canada’s Alimentation Couche-Tard that the founding family had rejected. Junr