Brands at best are a way of being able to distinguish a companies product to secure repeat custom because you like the quality.
They have in some areas been taken over by marketroids to associate a trade name with glamour and make them desirable and exclusive so that you can charge a premium for that.
How much is an unbranded piece of clothing actually worth? However well designed whatever the quality? Now stick a label like Versache on it and all of a sudden you can sell it for three four five times the price.
It's a confidence trick to appeal to people's vanity.
You'd think food would be seen more as a commodity - but no this isn't just food this is M&S food! How blatent does it get?
Do you remember Dasani? - Coca cola bottles tap water and sells it to you with an exotic sounding name
http://business.guardian.co.uk/story/0,3604,11 74127,00.html (if you've forgotton)
Petrol the greatest commodity item - unbrandable surely - no just do a deal to rub the shiny shiny from an exotic brand and you magically have Shell Optima developed with Ferrari!
For me the Radio Times is a brand because I don't go to buy a "listings magazine" but
that one.
Personally I sometimes wonder if Bill Hicks was right "If you work in advertising or marketing...Kill yourself!...no really it's the only way to save your f*ing soul!"