the best way to buy a house is to live in it for twenty years first. How much of a demo do you get with a product that takes you twenty five years to pay for?
Normally a few hours at most.
Cliff, your home buying analogy is specious. Home buyers in the U.S. have laws which protect them from misrepresentation, fraud, and even dissatisfaction in some cases with their home purchases. There are no such laws protecting consumers when it comes to software purchases including video games. In addition most EULA's are crafted in such a way to absolve developers and publishers of any responsibility for their software and provide consumers with no recourse in the case of dissatisfaction with their purchases. In addition no retail stores will accept returns on opened software for refund so consumers have no recourse for compensation if they are dissatisfied with their purchases.
Before video game publishers and developers complain about about unauthorized use of their products, they should first stop taking their customers for granted and treating them like criminals, stand behind their products, and offer a fair return policy instead of hiding behind their EULA's. When you treat your customers with disdain, you shouldn't be surprised when some of them return the favor.