And that's all they say about that. Nothing about animal rights, animal welfare, or government dairy subsidies. Legend has it that at one point the US government was paying 75% of the price of dairy.
I'm not sure how it is in the UK, but if you took that out here, vegan soymilk and dairy milk would cost the same. That bugs me. It's a free market except for isolationism, cronyism, and the need for "small farmers" to act as PR fronts. Occasionally there is a good regulation that does something useful.