I agree with you there, it just really does not make sense to me that they don't sell. All the decent V8 Supercar teams buggered off to Holden, which was a shame. The only car that has been a great success for Ford recently was the Territory when it came out, it will be interesting to see the effect of the new one when it finally comes out. Holdens sell just because they are Holdens, but I don't recall anyone buying a Ford just because its a Ford. I would think that it would be more of an embarassment to buy a Holden these days with all the cut-price Korean rubbish they shove down our throats, while Ford is still offering premium European products for the same price, but for some reason Holden is better just because it's an 'olden MATE!
Also, why do Toyota and Honda refuse to sell any diesel-engined passenger cars here? Everyone else does. I suspect its because it would let down their "hybrid>everything" brand strategies.