I think the real issue is that the IP license holders aren't seeing the potential that your projects PoC. The popularity of both Fallout and Halo should appeal, tremendously, to Lego; additionally, MS should see the branching out into the "Lego" space as a positive move re-invigorating their IPs.
Either way, keep up the good work and eventually, if the stars align correctly, you'll at least land a job you enjoy. Hopefully your work will shoe-horn some heads out at MS and Lego as they are clearly sleeping at the wheel right now.
Stick to your guns and keep moving forward!