Some of those examples were mandatory. If you look at parts of Australia and also the European Union, you see mandatory labelling of cage eggs. That's had a really significant impact on sales of cage-free eggs.
I think that just makes it very clear that consumers, once they have that extra information on the products they're buying, will go for a more humane method of production. Polling indicates that consumers do care about the methods of production of eggs and pork. When they have that information, they will favour a more humanely produced product.