LG V VX-9800

This is more a Verizon question than an isolated 9800 question. But is there a reason why you can't see a demo or even play a trial version of the many many games you can download to your phone. Its like your gambling in a way because you have to pay for the game and if you don't like the game or its not what you thought it would be your screwed! When i had phones on other carriers they would at least let you see a demo of the game in action before you bought it.