Oh dear... I've been triggered by that reference to the HP-UX boxes at Queensland police in the early 2000s... yes, it was as bad as can be imagined... no, actually, it was worse.
A large number of them were out-of-date and at their end-of-life. HP was charging a super premium for keeping them in support beyond their normal end-of-life period... some reseller pointed this out as a justification for why it would be cheaper to replace them than to keep them in support. It back-fired: QLD police just took them out of support without replacing the hardware. State-level critical infrastructure running on obsolete equipment with no vendor support....