That last picture was the way of world and Data centers. From the 70s through the 80s, with virtualization and less on Prem servers, it has changed drastically!!!
My first PC was an IBM 8086 that used dual 5.25 inch floppy disks with no hard drive. I didn't buy it. Some guy wanted to buy a new a computer and wanted to rid of his old junk... Anyways, IMO IBM is just like Japanese anime. Initially only Japan could produce quality animation. Once China mastered the 3D CGI animation technology, you never want to go back to Japanese anime. To see what I mean you only need to go to WeTV website, which is the official international website of China's #1 entertainment company, Tencent and check out ANY anime series shown there.
I'm pretty sure once Harmony OS for PCs matures and an alternate CPU architecture emerges to fully utilize its features, I would never ever want to go back to the IBM/Intel/AMD/Windows machine!!
Like Japanese anime, IBM is only a stepping stone towards something much greater/better!
"The once well-known IBM is now "just" a specialist"
You may not see the name on many consumer or even commercial products these days. However, as an example, IBM systems & products remain at the heart of almost every secure financial transaction worldwide today and far more besides. The company may not be well known in the world of consumer products; it's certainly well known everywhere else.
Prior to S/360, IBM computers were either Scientific (binary) or Commercial (decimal).
The S/360 innovation was a single machine that could do both. Supporting research during the day and accounting at night. On a bigger, faster machine than either workload could have justified by itself.
IBM's System/360 was a risky decision at the time. A five-billion-dollar bet that was supposed to be a game changer, but could also have bankrupted IBM. Some companies bought their first computer in the 1960s thanks to this system.
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