I started at a university full-time in 2014 in the IT department. Same year a project to decommission an aging IBM mainframe that sat as a lynchpin in nearly every important operation on campus; course registration and thus billing and grades, transcripts, as well as a home-grown SSO from the early 2000s no one understood any more. The consulting costs were insane, as were the support costs, so that poor thing had to go (second prettiest rig in the datacenter after my Xserves).
When I left that job in 2022, I believe most of it had been offloadded, but I can't say for sure if they had actually shut the fucker down yet.