I think the move from project management to "product management" really exacerbated this. The type of people that gravitate towards "product" vs "project" mana

I think the move from project management to "product management" really exacerbated this. The type of people that gravitate towards "product" vs "project" management is one thing. Further, project managers tend to focus on delivering the product stakeholders have asked for on time and on budget. Product managers however I find are frequently searching for a new expanded scope of stakeholders to brag they're solutioneering to. I find them more often in the "solutions looking for problems" business than I find developers, or at least developers are only doing it on a micro-scale, while product managers will take an entire team/org on 6 month fruitless missions to build software destined for the dustbin.