If Windows Came to PPC, Would You Switch?
running OS X on x86 hardware can benefit you thusly: killer OS, inexpensive hardware.
On the other hand, there is no benefit at all (none, zero) to running any version of Windows on an Apple chip. Windows would be equally as bad running on an expensive G5 as it would on any other chip.
This is like asking "Would people buy a Jaguar designed and built in Detroit even though they remain as expensive as ever?". The answer is no, not many will, and fewer will like it.