Feather's can and have been very profitable, It all depends on what you want to do with events. For us, full combat isn't the sort of thing that you can host every month like you can when putting on a "show" because the robots getting broken too much. The work and time involved in selling tickets and advertising for an event is massive, and even with selling out we didn't feel it was worth our while. Feather's will sell tickets as much as heavies if done properly, but that's not what we as a company want to do.
We put on the competitions now to attract people to our brand and put on a spectacle, which is why we spend alot of time and money to put an event on at the Gadget Show Live.

The "vault" arena that BTP built I believe was bought by Roaming Robots. From what I understand they used the polycarb and weighed in the rest of the arena. Again, a similar situation where the arena was so heavy it required a huge amount of time and effort to set up.