Out of curiosity, could you give an example of the software kickstarters you're talking about?
While in an ideal world, things like this could be free, in reality, the amount of time, effort, and people involved to build it in the time frame we're all wanting this means they need money and I'm not sure having rewards for $15 is going to accomplish that. That's the unfortunate reality of what is wanted, and what it takes to actually get there. :\