I've been thinking about this as well, but from a different angle: the product manager role just feels too much weight for a single human being to shoulder. Whe

I've been thinking about this as well, but from a different angle: the product manager role just feels too much weight for a single human being to shoulder. When my last company went through the exercise of writing down roles & and responsibilities, the PM's responsibilities ended up being something akin to "general contractor", or someone that does everything that's left over after responsibilities are split up across different team members. It's great when you find that outlier person who can handle this responsibility, but when you can't, the older model of having a team consisting of a business analyst, architect, engineering manager or project manager seems to work (although not in a very satisfying way).