The initial financing deal, for Marvel Entertainment, Inc., consists of $525 million for the possible production of 10 films, based on its comic book properties, over the next seven years. The debt facility will fund initial development, including scripts for each production, and they maintain sole green light control. Understandably there are some restrictions to taking a loan, Marvel cannot withdraw profits until after the release of the third film and only if certain financial parameters are met. The original properties for those 10 films, announced in the press release, were Captain America, Nick Fury, The Avengers, Black Panther, Ant-Man, Cloak & Dagger, Dr. Strange, Hawkeye, Power Pack and Shang-Chi. In the original press release, the budgets ceiling is at $165 million and can have a rating no more restrictive than PG-13. The explanation of why Marvel had been doing everything on the cheap was apparent from its initial deal.
Looking forward, Marvel can regain their characters but itll be nothing short of jumping through a ring of fire. The studio can shell out truckloads of cash to buy them back or wait for box office numbers to be so bad the studio that owns them doesnt have any interest in following them up, ie. Ang Lees Hulk (thanks, Universal!). Not meeting a deadline for filming the property is the easiest way most of the contracts have a clause that allows the rights to revert back to Marvel if principle photography doesnt begin by a certain date after the initial release or if they make an upfront payment as if they were going to start principal photography. This, in part, is the reason we see studios releasing films in rapid succession.