They
can and they are
doing it, some already for years:
1. InovisCoat in Germany
www.inoviscoat.de .
Former Agfa (Leverkusen) engineers. They built a complete new, modern factory for photo film and paper (using the coating machines from the Agfa Leverkusen plant) in 2008/09.
They are producing color and BW film and paper for several other European companies.
2. Adox in Germany
www.adox.de . Small, very flexible plant, also partly using former machines from Agfa.
3. Impossible Project with their plant in Enschede, Netherlands.
4. Film Ferrania starting film production this year with a new, right-scaled film production.
5. Ilford and Foma: Both have re-structured and downscaled their production, invested in new machines.
6. New 55film is working on LF instant film:
http://new55project.blogspot.de/
All that is kind of "old news", discussed here in the last years again and again. But lots of members are permanently ignoring these developments.
Especially those who are always posting that there will not be a film revival
😛
Cheers, Jan