Interesting article.
My dad tends to buy anything once, but he buys Fords consistently. Whether there have been Fiats, Hondas, Jeeps, whatever else in the driveway, they have always shared space with at least one Ford for the last 30 years or so. My dad is not particularly brand loyal, but he always ends up with a Ford since he hasn't really been burned by one (except a 1978 Mercury Zephyr). The Ford dealer is usually the first place he goes to when it is time to trade in. My mom leaves the buying up to my dad, but she is brand loyal to Ford and does push my dad towards them.
I would buy something other than a Ford, but I just prefer vehicles based on the Ranger/Explorer platform, so I keep buying them. I like the interiors, I like the drivetrains, I like the styling, etc... so I just don't have any incentive to change. I might get a full size Ford next, but who knows. It will be used since I don't really like new Fords. I did consider buying a brand new 2007 Ranger, but I just didn't see the point since it was the same as the 2001 Ranger I already had. There is no way I would buy an Explorer built after 2001. I guess maybe I am brand loyal to Ford, but only if you are talking 2001 or older ones, lol. I have no preference with new cars - I don't really like any of them enough to buy one.