McDonalds destroyer of the rainforest?

Recently, I stumbled across a website that is very anti-McDonalds. It refers to a court case in the UK where two people sued McDonalds.
The verdict was devastating for McDonald's. The judge ruled that they 'exploit children' with their advertising, produce 'misleading' advertising, are 'culpably responsible' for cruelty to animals, are 'antipathetic' to unionisation and pay their workers low wages. The people who brought forward the suit where unable to prove all the points and so the Judge ruled that they HAD libelled McDonald's and should pay 60,000 pounds damages.
In this case several scientists testified that McDonalds supported destroying parts of the rainforest to make room for cattle ranching and therefore cheaper meat.
All of the incentives are there for McDonalds to continue these practices. How do you stop the company that is a global power and able to pay the price to get cheaper prices?