Why do you worry? What's the point of worrying? What good will it do? Nothing!
Just shoot film and enjoy. If it's not there, use some other film which it is there. It's really that simple. No need to get all fanboi about it and get panties in a twist. I will shoot what I like for how long it is there.
If it's not there, I will move on and use something else. I guess if you worry so much instead of taking photos and shooting film, there might be no film in the end?