And there lies one mistake MSFT is making. I definitely wouldn't pay good money for one of these if it can't run anything besides Win8. Perhaps only if it has a well supported jailbreak.
People who immediately remove your software (and sometimes ask for a refund) aren't a good target market. Seriously, why do you want to buy a Windows tablet and remove Windows? Why not buy what you actually want?
Because with Apple and MSFT requiring UEFI locked ARM devices, how much choice do you think will be available for people looking to buy ARM tablets they can run any OS on?