Jeff Vasishta Though he’s not as wealthy as his billionaire friend Warren, with whom he shares a surname though not DNA, Jimmy Buffett hasn’t done too poorly from epitomizing the lifestyle of an escapist beach bum — as best described by his still-in-rotation 1977 hit “Margaritaville.” With a business empire based largely on his Margaritaville Café restaurant chain and its numerous merchandising spins-offs, Buffett’s net worth is currently stacked to over $550 million, according to Forbes.So the