Mozilla and Google seem to be having conniptions over the fact that Chrome and Firefox won't be allowed to run as Desktop applications on Windows 8 RT, even though they will be able to run as Metro apps. Chrome and Firefox will be able to run on the standard x86 and x64 Windows 8 desktops. Just not on the desktop of the specialized Windows RT version.
Outside the Mozilla/Google echo chamber people find this odd because neither organization seems to have raised much of an objection to not being able to run their browsers on the iOS platform. Apple has very similar conditions to those that Microsoft is enforcing for Windows 8 RT - you can use WebKit or you can deploy on another platform.
I can only imagine that Mozilla/Google are making so much noise about Windows RT because they concerned that the unreleased Windows 8 tablet OS is eventually going to surpass the market share of both iOS tablets and Android tables. Why else would they be concerned specifically about not being able to deploy to Windows when they are currently unable to deploy to the platform that dominates the market, Apple's iOS? If you thought that it was going to be a minor player, and you don't get excited about being unable to deploy to iOS, you wouldn't bother getting angry about being blocked on Windows RT.
Should vendors have the ability to control which applications run on platforms? Given that there isn’t a monoculture when it comes to tablet OS, why shouldn’t vendors be able to choose a strategy that suits them?