From my experience in manufacturing and product develop/management -
There isn't a big enough ROI for any camera maker to go down the path of designing, tooling, and making a "new" film camera. The market just isn't big enough to support it.
I'm fairly certain that if you actually do the market research, figure out the # of film shooters based on the # of rolls sold in market, then extrapolate that out to figure out which users are willing to part with big $$ for a new film camera - you would find its not worth undertaking such a project. The only reason you could argue the point would be if you are an already well-established camera company and are doing it for purely PR or other marketing reasons. But as a project that would involve spending/investing for a return of dividends to the shareholders - no.
Don't get me wrong - its fun to talk about. Just not realistic. And I'm not talking about some lomo-type camera like the Sprocket Rocket or a Holga/Diana - I mean a real camera.
Jeremy
<DISCLAIMER - I own a Sprocket Rocket and several Holgas - the above was not meant as a dig on them.

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