Michael,
There is something to be said for trade mark names. As an example, my Dad used to work for CPC International one of the world's largest food and starch companies, which was later broken up and bought by Unilever and then spun off. You will recognize many of their name brands including Skippy, Mazola, Helmann's Mayonnaise, Nusoft, Bosco, Thomas' English Muffins, Arnold's Bakery, Knorr, Fanning pickels, Best Foods... Well and though this was regional, Helmann's Mayonnaise was sold in certain parts of the US and elsewhere it was Best Foods Mayonnaise. As far as I know the same product though sold under different names.
Maybe a better example is Proctor and Gamble who markets so many different detergents, soaps, and toothpastes.
Leave it to say many companies want the name recognition even if they sell the same item under different labels. So if a company is bought, it may be bought for the trademark due to the name.
Rich