[jack9]

> The sad part is the authors example is easily avoidable and does not cost more to avoid.

Except for all the costs of maintenance. It always costs more, generally in the way of time.

> With virtualization and continuous integration the cost of doing it correctly is marginal

Until you have to debug while the integration fails.

> This is a solved problem.

Even with unlimited funds, you get a cost of time and communication. There are tickets and tickets and a queue and a release schedule. The optimal path is not as simplistic as you would fantasize.