Re: Encourage z/OS and z/VM on Hercules
IBM did try that in 2001 by donating a mainframe to Warwick University ( https://12ft.io/proxy?q=https://www.timeshighereducation.com/news/ibm-puts-warwick-ahead-in-grid-quest/156954.article ) as part of the Grid initiative. (Did anything ever come of that initiative?)
However, only a few years later the mainframe was decommissioned (there's a photo online somewhere of it being unceremoniously shunted out of the Computer Science building, presumably on its way to the Land Where Legacy Hardware is Eternally Blessed), and my suspicion is that the closed nature of the platform stood no chance in an environment where Linux and open source was exploding in popularity. The mainframe must have appeared to be as incongruous as a headmaster at a school disco.