ES is practical if your use case supports it. I think you only need to look at Citibank's success post 2008 banking crisis to see the successes they've had as a company. When their developers were touring the No Fluff Just Stuff events in 2015-2016 showing their work and how much they were giving back to the projects they were using really puts a stick in your wheel.

Financial systems can really take advantage of it. Your post is hyperbole.