On a similar theme I try to avoid, when shopping brands , straying from what made the brand famous.......
Ray-ban...Sunglasses
Ben Sherman...Shirts
Timberland...Boots
ETC
All these "brands" have optimised the brand by branching into other areas but never doing the product as well as their main lines or indeed better than someone else.
In the car world this is shown by Porsche ..sledges or even Aston Martin golf balls.
If you do what you do well and keep doing it better than anyone else, then thats the way I like it.
