It's easier to scale to multiple cores than to multiple machines, and cloud services have been doing multiple machines for decades. If this wasn't needed or wa

It's easier to scale to multiple cores than to multiple machines, and cloud services have been doing multiple machines for decades. If this wasn't needed or wasn't useful then we also wouldn't ever see companies buying more than a single rack (still want redundancy and hot spares ofc), but they do. So yes we know how to use all these cores. You take what's currently 4 machines and consolidate it to a single machine. Or similarly 40 machines to 10 machines, etc...