The thing is, most people don't care about doing everything you want to do with your electronics
Well that's KIND OF THE ENTIRE POINT.
No, that's not the entire point. Your point is that a "proper open tablet could pretty much wipe out netbooks." It's not a lack of openness that's holding back tablets, else the currently available x86-based tablets would have taken over and the iPad would not be successful where others have not been. What is holding back tablets is the price and lack of utility. Sure, openness will help out with these two things (as I mentioned in a previous post), but openness in the sense you are describing isn't really the issue.
With a system where developers are free to do as they like, no one has to be limited by myopic jerks like you. The entire world doesn't have to be mired in mediocrity.
Not myopic, realistic. And you're the one throwing the insults, so not sure who the jerk is. And while the entire world doesn't have to be mired in mediocrity, it seems to be quite content to do so. How many people hack their gadgets or buy things based upon customizability and control? Get real; price and ease of use are the main things consumers care about.