In John Lee Hancock’s biopic of McDonald’s executive Ray Kroc, The Founder (B), the hunger of the protagonist is so palpable you can almost taste it. It’s a rather ruthless portrait of a business tycoon with Michael Keaton in fine serpentine form, part Midwest milkman charm, as wily as a Music Man, relentless as a cattle driver. While it’s ironic a man named Hancock fails to leave much of a signature in his ambivalent lens on the historical figure responsible for spreading the world’s most famous hamburger stand beyond its humble California origins, it is a fascinating business case and mostly compelling in its story (gulp) arch. As the humble and inventive McDonald’s brothers, Nick Offerman and John Carroll Lynch are fabulous foils to Keaton’s Kroc. The film’s best sequence, although awkwardly placed in flashback, depicts the McDonald’s brothers designing a kitchen schematic in chalk on a blacktop, with crew “blocking the scene” like theatre directors would do. Kroc’s troubles on the domestic front including an estranged marriage (Laura Dern simply has to look sad a lot) and a fixation on a bottle of his own form of special sauce get short shrift as business machinations take center stage. The cynical themes about persistence and ambition trumping actual genius or invention, juxtaposed against sunny nostalgic art direction, are timely and prescient; but after more richly textured tales such as The Wolf of Wall Street and The Social Network, this film could have used a bit more super-sizing in ambition.