I know you won't believe it, but it really took 2 years until there were ATI drivers that finally worked. Even now people have to use beta drivers because the public ones still crash. Part of it is certainly our fault - we dared to add more features along the way, using the latest OpenGL features that always tended to be broken.
But as I said, you won't believe it, like some of our testers that were reluctant to install the beta drivers, fearing instability. Which is funny when official ones give you crashes and BSODs. Since the existing games don't have this problem (because they don't use the GPU that intensively), people simply don't believe it.
Summer demo (we said that we would like to release it, not that only an act of a supernatural power can stop it, but you know it) lags because we simply don't have it in a state viable for a public demo yet. It's not about "polishing", it's about not crashing, not having awkward controls and not leaving a bad taste, because as other people have said, we will only get to release it once.
Why are you so angry? As if Outerra was meant to solve all the world's problems and you invested into it and now think you've lost your money?
"Check out Microsoft FLIGHT (2012)" - what's this has to do with it? I guess that after the demo you'll soon start demanding that we release a flight simulator, and turn bitter if the two people don't deliver something that's better in all respects than what Microsoft does ...
Our fault (common for almost all the developers) is the consistent underestimation of amount of work and the number of problems to be encountered. That's why companies employ people that forbid developers to say or promise anything. But we need some feedback in order to continue with enthusiasm, and that's why we were publishing development stuff, that unfortunately gives some people a false feeling that it should have been ready for ages.
I know the game these types of developers play, it will be 2015 before anyone sees anything tangible at all.
A closed beta testing is underway, by now like 20 people got their hands dirty with OT already. We have selected some of the patient and nice people that lingered here for a long time and have an idea about the amount of work involved. We'll be slowly expanding the group as we can handle it, ironing all the quirks and bugs, so that eventually we can dare to include the bitter ones in the testing as well.