Pint sized ripoff?

http://www.vancouversun.com/pint+sized+ripoff/1918108/story.html

I learned something a few years ago - that a pint in the bar isn't actually like a pint in the real world. The bar in which I learned this served an 18 oz pint, not quite the full one, but apparently more than the average pint served in a bar.

What I find funny is why the provincial government in British Columbia felt the need to ensure that a pint isn't actually a pint.