Good exploration on how the total cost of ownership is spread depending on how is licensed the software you use and where you get your support from. I think there's one point a bit too glanced over in the analysis of the cost for the proprietary SaaS case: what's the cost of fixing a bug that affect your team? You might be a tiny fish in a large pond, good luck getting attention from support in this case.

This is an interesting move, we'll see if this certification gets any traction.

Still a long way to go but definitely a move in the right direction.