If high capacity magazines are going to be banned, what will become of Hollywood magazines?

As we all know, the Arizona shooter was able to fire off 30 rounds without reloading thanks to a high capacity magazine. Some have called for these to be banned in the tragedies wake. However; Hollywood magazines would still ber readily available and can allow one to fire an infinite number of rounds without jamming or overheating the firearm. What will be done to circumvent this threat?