Centroid uses a forum very successfully to support their products. I'm betting that Tormach has answered some of the same questions hundreds if not thousands of times. Prusa 3d also has a similar forum.
Even Verizon (almost always at the bottom of customer service surveys) has a support forum which seems to be staffed almost entirely with "volunteers".
I understand not supporting mods for both liability and financial reasons, but they certainly could be covered in a sub-forum not monitored by the company but still a repository of knowledge.
Personally, I think Tormach has missed several opportunities - 1. Not organizing community support and therefore not fully creating a community around their products. 2. Service, not call in or warranty, but a contract or arrangement with a national service company which could offer PMs, service and more importantly commissioning of their products for interested individuals and companies. Imagine what Haas or Fadal would be if they didn't offer or include commissioning with machine installation?
All that said, I think it's a testament to Tormach and it's machines that they have been successful despite a wide range of users, abilities and installations.