I don't disagree - right now, Marvel are spinning shit into gold (seriously, who knew of GOTG a few years ago outside of hardcore comic fans?).
If TF4 was a bomb, you'd see changes. You think anyone writing the cheques is going to think any different? I'd be listening to the sounds of $1billion being counted, rather than the fanboys complaining?
I sometimes wonder though, if the G1 cartoon was based on the concept of selling products to kids, it makes you wonder - would a TF live action movie be any better if they just made the damn toys first? :P