As much as the public and even the games industry itself can often narrow the potential of these products to strictly gaming applications, businesses from architecture firms to animation are already disproving this preconception with real-world applications of the technology.
As the potential for real-time technology grows, with the support of engine creators themselves, these use cases will likely only further expand in the future.
You can read this piece, featuring interviews with Unity, Stargate Studios and E.d. Films over on Barclays Eagle Labs.