I went to viewing of this during TIFF last year. But unfortunately ZZZ through most of it, no fault of the film which I enjoyed for the parts I was up.

>Japan is a democracy and old people vote

I think when non-working gerontocratic voting block interests confronts with interests of tax paying workforce trying to keep head above water, the elderly are going to lose. When under 50 year olds have to decide between their reduction in their QoL / services vs neglecting the old, including their own kin, they're going to eventually chose to throw their kin under the bus. If problem is just structurally not resolvable (which IMO it's not), LDP will claw their way back from whoever the next DPJ upstart is after they fail. Which is to say, I can imagine JP getting some robots going, and some migrant worker for elderly care, but if neither is enough, I think more likely politics will over promise and underdeliver until elderly accept their lot because you can only push the young so much. It's going to take a few political cycles for people to accept the "normal", but if any "democracy" can rig the system to survive that process, it's LDP/Japan.