I think you're right. I know lots of products built on 3 that have "migrate to 4" in their backlog but it's an easy one to push out... for years. Part of this

I think you're right. I know lots of products built on 3 that have "migrate to 4" in their backlog but it's an easy one to push out... for years. Part of this churn fatigue is that we depend on community support for a lot of these technologies. Support for something like .net or Java used to be rudiculously long, but as they've switched to OS-friendly development practices the pace of releases has increased and lifetimes diminished. Coupled with building on more and more shaky and temporal abstractions and a web app written today won't compile in 6 months.