Is this actually true? Maybe in a widget factory. I think it’s an anti-pattern for the new world.
When you look at places that are shipping at insane pace (like Anthropic) the secret is not accelerating the writing down of a roadmap and we’ll groomed backlog, it’s empowering smart individuals to run their own end-to-end product improvement loops.
You can slightly reframe the OP by saying “the bottleneck is product ideas”, but “well formed backlog items” IMO frames it as more structured and hierarchical than it should be.