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I'll point out that transistors were invented in 1947 and the computer industry made the switch from vacuum tubes to transistors around 1958. Integrated circuits were invented in 1958 and the computer industry switched to them around 1965. My point is that historically the computer industry has been able to switch to a completely new technology a decade after it's invented. HP's memristors have been around for 15 years and haven't made much impact.

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If you look at IBM's history you can see how reliability and the ability to manufacture components in quantity played a huge role in the adaptation of both. Bell Lab's early point contact ones weren't manufacturable. IBM didn't move to proper ICs until 1970 with the System/370 because anything they made including the low end would be sold in quantities too high for ICs before then (System/360 Models 85 and 195 preceded the 370s by 1-2 years, but they only sold 60 total units).

So memristors are almost here, is that what you're saying?

No idea. For example, between the development of core memory and DRAM there were a host of technologies they tried because core is slow and expensive to manufacture. The best they did for speed was called thin-film, and they sold only two systems with it, upgrades of the System 360 Model 91 supercomputer named the Model 95. They had 1 MiB of it and 4 MiB of core, sold to NASA, the first Model 91 customer: https://en.wikipedia.org/wiki/IBM_System/360_Model_91

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