Ahhhhh, yes, I've had to explain this one a few times

I use the fact that a LOT of their products are bad for us to eat anyway, so I project them in the light of being a manufacturer of mainly unhealthy foods. Obviously the foods that are healthy (the good cereals) throws a spanner in the works with that reasoning, so I raise how they have some horrendous practices in developing countries that leads to unnecessary deaths in tragically high numbers
Give DD lots of hugs and I'm sure you're absolutely right that she'll relate to the breastfeeding stuff

You're not alone in having blurted out something that conveyed your feelings instead of something LO's can grasp.
Over time I've used such pearlers as:
DS2: mum, can we have some of the cookie crisp cereal?
DS1: No, it's not even real cereal and its Nestle!
DS2: oh yeah, mum, why don't we buy Nestle?
Me: Because they are eviiiiiiiiiiiiiiiiiil bad people who want your teeth to rot and fall out, can you put some wheat bisks in the trolley please matey?
Me: (exasperated in supermarket coffee aisle) I can't find the ethically enhanced coffee, I'm surrounded by disgusting nestle aaaaarg...where's the Fairtrade?
DS1: but that says nescafe not nestle mum
Me: ahhhhhh, but they have many guises they sneak behind to trick people!!!!!
DS1: do they!?!
Me: yes, yes they do
DS1: like what?
Me: like pretending to poor people in developing countries that formula milk is better for their babies than breastmilk
DS1: well thats a lie isn't it!
Me: yes, but they tell lies all the time and because of their lying babies die, about 5 million a year actually....
DS1: that's horrible, I don't really like kitkats anymore...