The good news is they don't even need to build memristors. Even simulated memristors are faster than than memory.
"The off-the-shelf, high-powered HP server completed the task in about two seconds. The simulated Machine needed only 50 milliseconds."
There is no Machine. There never was any Machine. The Machine is an urban myth, a grand illusion, something to give your life meaning, but which is in fact not there.
Someone probably made a nice sum from the temporary stock bump...
The idea was "imagine if you had a server with an insanely huge amount of non-volatile SRAM (that could hold OS, applications, and files), and no hard disk"
It was the "huge amount of non-volatile SRAM" part that the memristor was supposed to deliver and didn't.