At least one casino giant supports the legalization of online wagering in America. And MGM mobile gaming already holds an interactive gaming license in Nevada. But the company’s Internet presence is devoted to a free-to-play casino site that allows customers of its M Life loyalty program to earn rewards, which can be redeemed at MGM properties in Las Vegas and Mississippi. MGM Resorts is taking a wait-and-see approach in regard to real money Internet gaming. The business model just isn’t there yet. Macquarie Securities gaming analyst Chad Beynon doesn’t blame MGM mobile gaming or any other casino company from sitting…