Nobody actually uses the Windows Store. The app store for windows is the web: put an installer on your website, user clicks it, IE runs it. No jailbreaking required.
Re:Ubuntu's Bug #1 is fixed
by icebraining on Thursday May 30, 2013 @11:30AM
(#5793093)
The only relatively free market is the web (which doesn't mean all the products sold through it are free, of course).
About your second phrase now, you need to take into account the entire picture:
* If you plan to sell an app on Windows Store you will need Microsoft approval, no app will be published without that. Also, Microsoft will take 30% from your app price (until you make $20k, after which the cut is 20%).
* The only free market seems to be Google Play, after you pay a fixed fee you can publish your app. I'm sure even Google has the right to remove your app if you infringe the rules of your developer contract.