The people who actually develop hypervisors and the hardware to support virtualisation would read the journal articles and textbooks written by the people who d

The people who actually develop hypervisors and the hardware to support virtualisation would read the journal articles and textbooks written by the people who developed hypervisors and such. People who developed noSQL databases would have looked at things like IMS when writing new systems presumably too. There's just mostly a disconnect with people who work developing applications and others on PCs and those who work on mainframes. At places where I've worked that had both PCs and mainframes there was default segregation between mainframe developers and maintainers and PC developers and users. Of a mainframe team of 20-30 people there seemed to be about 5 who were PC devs as well.