Many times, they are indeed MBA problems. VPs micromanaging instead of delegating, not investing enough money into hiring, retaining and developing their talent, etc.

Other times, it is a problem with the existing developers. Choosing not to learn/follow industry best practices. Creating an over-engineered solution instead of a simple one. Skimping on automated testing and spending more time on manual testing instead. Making their colleagues wait an inordinate amount of time for a simple question, code-review or approval. There are many things developers can do that would slow down their team's productivity.

I don't think tribal finger-pointing is very productive. It really does vary case-by-case.