Look at it this way: am I more willing to develop something if I have to put up my own money, even with patents and copyright, when there is a chance I might fail, or am I more willing to develop something that might fail if I'm guaranteed to get paid some sum right now to do the development work.
I think you might be focusing on the wrong group here, it's not necessarily the writers that have to worry about costs, but the investors. Put it to you this way, would it be the case that investors are more willing to give money to an artist when they don't own the distribution rights over the work, or when they can only benefit it for their own usage or simply wait until their competition makes something similar and copy that?
For very small projects this would work, but not something that incurs the cost of an entire studio of people who work day in and out.
As for kickstarter, I don't think people would be satisfied if they actually knew what they could be doing with the money. As a whole I think people who give money on kickstarter need a bit of collective work. They could demand far more than what the developers are offering them. For example, given a choice between giving money and simply getting the game when it's out, and giving money as an investment, receiving partial ownership of the rights to the game itself and get the game as well, I think the majority of them would be going for the second option instead.
The part about the risks being moved onto the commissioners instead I do think supports this. They would be far more unwilling to invest in things particularly if the costs of high. Yes, the risks would be shifted onto them, but they too recognize this. For any project that involves more than the employment of 50 skilled people over a long period of time a lot of investors would shy away if the only thing that they got in return for giving these people a lot of money is that they get to use the end product, or when a small set of inventors require a lot of expensive custom built machinery or rare materials on top of their skilled man-hours to just produce a prototype that other people who have not put in the same amount of money can just rip off. You've shifted the risk to the commissioners yes, but you have not solved the problem, you've merely shifted it onto someone else, and therein lies the same bottleneck you're trying to clear up.