David Cage is an overrated douche who needs to pull his head out of his own ass.
The whole concept that the industry will die without innovation is flawed as a premise. Just because triple A titles are mostly sequels doesn't mean that no one is making new games, it just means that people obviously want more of what they know is good. Those new groundbreaking games will still get made and if they're so good, they get sequels because people want more of it. No one has a gun to our heads when we buy video games.
Maybe if Heavy Rain wasn't a piece of garbage people would have wanted a sequel.