When film died, we saw many other potential applications in technology and medicine. But the cost was just too high. Batteries for electrical cars were one. Chlorine replacement in pools another. Colloidal Silver suspensions for various ailments a third. Microwave blocking was another. None happened on a large scale for various reasons. But now it is starting to happen in heating elements. This is no aberration. It's the beginning of an application trend.
Despite being better than copper in many conductive applications, the price of silver was too high for heating elements. And so copper was used. Technology finally devised more efficient use of Silver in windshield heating to replace copper filament and decrease glare. And that means more silver will be used. And that, in turn means more similar applications will be researched.