AMAZON.COM is taking on Walt Disney and its superheroes in its fight to gain more control over pricing online. Amazon blocked pre-orders of Disney’s summer hit movie Captain America: The Winter Soldier and other titles in disc form, repeating a tactic used in recent disputes with book publisher Hachette and Warner Bros. The move signals that Amazon, the world’s largest web retailer, is increasingly willing to keep certain items from consumers to put pressure on its vendors. It also spotlights the extent of Amazon’s clout in the home-entertainment market. “They are squeezing studios on DVD pricing, understandable given their market position,” Michael Pachter, an analyst at Wedbush Securities, said. – Bloomberg