The downside is that after you make it work there is no incentive/glamor in getting back to clean-up. Thus, not enough people get to have the minimum knowledge

The downside is that after you make it work there is no incentive/glamor in getting back to clean-up. Thus, not enough people get to have the minimum knowledge to fix things risking whatever worked to stop working. And the work has a bigger risk because you can't actually check on more than a couple of distributions before you ship.