I think the reason I like cars like the Yaris GR-4 is because they go against the conventional way of making a product.I like seeing cars like this, even if we don't get them, though I prefer we do. It shows there are still people that work for these big companies that love fun cars, and able to sell the bean counters on there being a market, or enough positive image from it to help the brands other offerings.
Normally Sales and Marketing define the demographic and price range, accounting sets the profit margin and costs, and poor engineering has to make everything work with the budget they're given.
With the Yaris GR-4, Engineering is taking the reins, and accounting and marketing are left to pick up the pieces.
It looks like the car was built mostly to accommodate Toyota's rally ream first and foremost.
That's why automotive journalists are so confused about this car, saying it's too expensive and "what's the demographic?".