[ad_1] Naguib Sawiris, billionaire and chairman of Orascom Investment Holding. Sima Diab | Bloomberg | Getty Images Egyptian billionaire Naguib Sawiris says he would buy airlines, going against fellow billionaire investor Warren Buffett, who announced that Berkshire Hathaway sold all its airline stocks at the firm’s annual meeting on Saturday. Sawiris, chairman and CEO of …