You care about the future of film if you intend to invest in analogue photography related stock.

If you are a photographer rather than an investor, the question is irrelevant because you can stockpile years and years of provisions and ask the same question in five or ten years time.

I like capers and eat them. I don't care whether other people like capers and if they are still around in 10 years. What other people do does not regard me. If I couldn't grow capers myself, I would stockpile them and again make the question irrelevant.