>  Do that for a while and you'll see them start sweating
  > and advertising their new open product.

No, you won't see that. They won't even notice. One of the mobile providers in my country currently runs an ad with a text like "Turns out 60% of smartphones are not so smart after all"—by that they mean, that those who bought smartphones don't even know how to configure them. Provider thus offers to help with setting up email, facebook, etc. My point is: majority of the users are not even going to use everyting that manufacturer intended to be used on the device.