If you look at the various tiers of this kickstarter you can see you'll have to go up to 600k$ to fund a proper ARM SoC 3D IP with AXI support. And since it's a kickstarter you have absolutely no way of knowing what the end product will look like.
I can't imagine any company betting that much money for RTL code with absolutely no warranty about what the end result will look like and if it's going to even fit in your SoC.
And the code being open source is actually not an advantage since it means all other constructors can then integrate the same GPU in their designs for free.
If it gets funded and it ends up working correctly I'm sure many companies will be interested to try and use it in their designs but I really doubt they'd fund it.
The only way they could do that is if they knew they could market their GPU to a broader audience and sell many units. The problem is I don't see who could be interested in buying a low-perf stand-alone PCI GPU which may very well end up costing more than a TegraII due to the small number of units.