Quoted from DavidPinballWizz:
Because they want to address 3 markets at once with a title
- young people, bar visitors, etc...
- collectors like us
- the guy that does a single purchase in his life
I think the first group wasn't addressed with a title like this so that could be a reason why we would never see a bttf from stern in the future. With batman you still have batman as a current thing, back to the future is really an eighties thing.
Ghostbusters is an 80's thing. Just sayin'. More young people know and love BTTF than Mustang, Aerosmith, Walking Dead, etc. My friend makes a living with a Delorean rental business - kids lose their minds when they see a Delorean time machine.