Ghastly union work-rules is what drove Hostess bankrupt.
Don't kid yourself.
I grew up on hostess. Loved them. Would easily have paid a premium for them.
Somehow they lost quality control over their bakers. I seriously doubt this was related to union work-rules. They started putting out stale cakes that tasted terrible. And other cakes were simply better. Not as good as Hostess used to be, but better than Hostess is now.