We both agree that access to capital is the critical issue for Edison. If they don't expand and become a volume seller, it doesn't necessarily mean their product is bad or doesn't do the job. It means they didn't connect with the right sources of capital.
Can they find them with what they have now? The approach in their website is unashamedly focused on the logging truck aspect. Seems reasonable, that's who they are, and theres a special aspect to mountain logging that makes a real benefit to their produxt. But I can see most potential investors thinking "niche product", and moving on. Similarly, their spiel about the full parts list and no in-house parts would sound great to fleet maintenance and shop managers, but the CFO types will see a business openly turning its back on a revenue stream.
PS, Edison does offer full battery electric option on its L series trucks.