There's renewed optimism that Christopher Nolan's Tenet will maintain its original release date on July 17 in the wake of a new report stating that the National Association of Theatre Owners expects 90% of the global theatrical marketplace to be open by mid-July. The surprisingly high figure comes from Business Insider, which cites a representative for NATO, the organization that represents movie theaters across America. Of course, if the figure is 90%, it's unclear what the other 10% represents. Could that 10% consists of major theaters in Los Angeles, New York City, San Francisco and Chicago? …