@Atheist
First of all, PCI RAM disks did exist before Vista came out and, by using them as a swap partion, they did make Windows XP boot at Amiga-like speeds. They used the always-live power rail from the power supply to hold their contents.
Second of all, flash drives wear out faster than hard drives and cost more.
Thirdly, hybrid flash/hard drive combos are available for Vista and allow Vista to almost perform as well as XP or better if you have more RAM than the 32-bit version of XP could address.
These technologies are real and are almost no selling point to the Amiga since they only work on PCs.