The problem with film credits is few legislatures have the appetite long-term to make them work. Those that do get a film production industry: New Mexico, Georgia.

List industries that the US doesn't subsidize and I'll show you a list of industries that make it up in payola and kick-backs. Honestly? I see it like the Airbus/Boeing debacle: Airbus exists because it is subsidized by the governments of France, Germany and England. Boeing exists because Boeing receives illegal payouts and favoritism in order to stay afloat against a rival that doesn't have to profit. Considering movies are rarely used to kill someone but always used to spread your economic and social ideals, FUCK YEAH we ought to be subsidizing the production of entertainment.

If I could make the DHS and the NEA swap budgets I'd do it in a heartbeat. What do you think Hitler looks like without Leni Riefenstahl? How long do the '80s last without Red Dawn and Top Gun? It's all propaganda; the only real question is how directly you fund it.