Don LuigiIf Porsche/Lamborghini/Ferrari, etc. were charging too much for their licences, I think that is a bad move in terms of marketing - if those cars were included and became favourites in the game, many people would consider purchasing those in real life, proabably increasing the volume of sales.
Agreed, take for Example, Nissan Skylines, they weren't really that known outside of Japan. Now there's loads over in the UK, this is mainly due to Gran Turismo & the Playstation Generation.