Your desire seems reasonable enough, but it seems a bit unreasonable to criticize ClearView publicly for not acceding to your request. It's their choice whether to give their IP away or grant NDAs or not. I doubt you'd have gotten much more of a response from any other commercial software maker, including any of the other commercial RC sim makers.

If you want to work on a Linux sim, crrcsim is an open source RC flight sim that already works well on Linux, and Mac for that matter, though it could use plenty of improvement. It would be a good opportunity to expand your programming skills to C programming, and contribute to an open source project. See http://crrcsim.sourceforge.net/