I have no experience or advanced education in chemistry or material sciences. Do you think it's possible that a ban would spur innovation? I imagine our modern world has use cases that can't just disappear or settle for something not as effective.
I'm curious as to the scope of this, and what end products are effected. A lot of the best-in-class greases (krytox) and orings (FFKM aka kalrez) rely heavily on fluoro-components. FFKM orings in particular are head and shoulders above everything else by ~100C worth of working temperature range. FKM 'Viton' orings are also incredibly popular and are widely used in automotive applications for temperature and oil resistance in addition to having major industrial uses.
[0]Fluorine is a real PITA to produce and make derivatives from - environmental issues aside functionally equivalent non-fluorine compounds would almost always be cheaper.
I wouldn't be surprised if they started using other plastics in frying pans one day, meant to be used with some fancy temperature control induction system. Lots of stuff is slippery enough for food applications, you just need one that's safe at the temperature oil gets to.
I doubt my life would be affected much at all without any fluoropolymers in goods I directly own.