It seems very unlikely to me, assuming a digital process is invented that can capture at least the information that film captures (and it is borderline preposte

It seems very unlikely to me, assuming a digital process is invented that can capture at least the information that film captures (and it is borderline preposterous to suppose that this will not happen), that someone won't work out a transfer function (I'm abusing this term, but you get the idea) that closely maps digital to film. Whether or not people will want that is another question entirely, but it would probably be used as a niche effect for getting an old-timey feel.