I think the presentation covers this fairly well. Give devs interesting work by having them solve interesting problems. If the technology stack is the "interes

I think the presentation covers this fairly well. Give devs interesting work by having them solve interesting problems. If the technology stack is the "interesting problem" then you are wasting this developer excitement on something less valuable than higher-level business problems. Go up the stack, get devs excited to work on those higher-level problems, and spend less of that expensive dev time on high-risk software that has questionable impact on those higher-level problems.