As a precursor, I don't have anything necessarily against the concept of a mainframe. It's just one big shared computer, not too much different than a kube cluster etc. But if there is one thing that definitely deserves to die in the mainframe world, it is IBM's predatory tactics for vendor lock in. Mainframes running linux I can see being around for a good time.Watch this video for a pretty cool story behind IBM and EBCDIC.
https://www.youtube.com/watch?v=FUIqtevjod4
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