BigTransformerTrev you highlight a very big reason for the continuation that I missed. Legacy.
G1 continues in my household because of Dad. I reintroduced the cartoon via DVD and it was a big hit. The chug stuff I picked up because of my kids and their demand (with my approval of course hehe) They saw the characters and wanted specific figures.
Heck, just a few hours ago I told a transformers bedtime story to my 7 and 4 year olds to go to sleep. It's was given the title of megatrons ultimate doom part 1. Sure it was partially for me but the kids really love that stuff. And I'm happy to oblige.
I reckon I'm not the only Dad doing this stuff.
Sometimes all you need is a little energon and alotta luck...