And it looks like that day has come - but not how everybody expected. Team ChevronWP7 has announced on its blog that it will be providing the app sideloading tool in the near future but there's going to be a catch: it won't be free. The tool will be approved by the Windows Phone team, and it's not for users to write apps for the Marketplace - those people will still have to go through the official App Hub. Other than that, no details have been revealed but expect to find out more soon.
This raises some interesting questions though. Android users root for free, iOS users jailbreak for free, why do Windows Phone 7 users have to pay a fee for this feature? The whole point of the sideloader was so that users who wanted to sideload apps didn't have to pay Microsoft a developer fee in the first place. What do you think of having to pay for a tool like the Chevron WP7 unlocker?
source: Ubergizmo