The past year has been an uncertain time for those invested in film exhibitors, with a combination of factors contributing to the doubt. The growing adoption of streaming, fears involving a potentially shrinking theatrical release window, and a weak slate of summer movies in 2017 all conspired to weaken demand and keep movie-goers at home last year.While all the major chains took it on the chin, IMAX Corporation (NYSE: IMAX), the leading provider of premium large-format screens, was among the hardest hit.