I posted this in an earlier thread, but I guess it's as applicable here as well, and worth saying.
I'm sure you, as a consumer to be, have rights here that you need to explore with a lawyer. Having decided that you want to buy their product on a certain date, I would think you could get damages from them for withholding it from you. Use your current agitation as evidence, make sure you conceal a history of tantrums and childish pique from the defence lawyers and and make sure that as part of the costs you include the costs for maintaining a jester to keep you gurgling happily when your plans for nursery domination are upset by HL2 being late, or your branded nappies causing a rash.
This whole attitude is probably the fetid backlash to the whole attitude that the customer is always right, to the utter detriment of the supplier.
People think they deserve the right to try a game out, so pirating it to play it through is ok, because we all know they'll very definately buy it later if it was worth it and there happened to be enough protected online content that they couldn't access with their 'demo'. Or hey, perhaps they wouldn't have bought it anyway, so because it's intangible in intellectual form, it's fine to steal it because they wouldn't have got your money anyway.
Thankfully, we at MoralAbsolution Industries are pioneering technology based on this: We have a product idea so great, it'll blow your mind, luckily, knowing that we'll be selling it to you in the future, we've ripped off your bank accounts for a reasonable sum, and will provide you with it when it's ready. Well, assuming you trust us to make that descision objectively now that we have your cash anyway.
You'll also be happy to know that our new PatentCircumnavigator system borrows all your original ideas straight from your head. It's been legally tricky, but with a large amount of cash, and by knowing exactly how the lawyers on the other side would react, we've managed a moral stamp of ok-ness from a legal point of view.
It works like this: each time you have a good idea, our system picks it up and stacks it for processing, the ones you never use but were actually quite good, we sell, since you wouldn't have used them anyway, we figured this was ok. The ones you do use, along with the clever details of how you get them to work, we'll be passing along to your competitors. Although they won't be able to use them, they'll shortcut catching up on your ideas, and be able to jump right ahead of you on the next product, no matter how hard or long you work! We feel this provides everyone with a great method of not having to get a job and funding for original ideas, or have to spend any time thinking up things that some other bright spark has figured out already!
We've also taken the remainder of the money in your bank account for startup capital, since we know you'll want to invest in us!