WASHINGTON – Steve Case, philanthropist, venture capitalist and co-founder of AOL, sees “legacy dinosaurs like McDonald's roaming the food landscape—and healthy fast-casual as the asteroid,” reports the Washington Business Journal.

The news source writes that Case recently spoke about “the massive disruption awaiting the traditional fast-food industry,” or what he refers to as “Big Food,” and the new smaller players that will eat up market share in the coming years.

“A lot of it is junk food in a world that is starting to wake up to 'your health begins at the end of a fork,'” Case said. “That’s why some of the giants like McDonald's and Taco Bell are seeing some challenges.”

Case said more consumers are demanding healthier fast-food alternatives, noting that in many respects the fast-food industry hasn’t changed in decades. The news source notes that this is a main reason why Case’s Revolution Growth is investing in several food concepts, such as Sweetgreen, Cava Grill and Revolution Foods, a healthy school lunch startup.

“I think fast-casual is where the momentum is. Fast-casual will continue to eat into the market share that fast food has had,” Case said.