If your cable or DSL provider can’t block some low-bandwidth application like VoIP simply because it competes with one of their own offerings, why should mobile operators have the right to do so? In Canada, they no longer do.
[…] On June 30 2010, CRTC at last decided to apply the same traffic management framework to mobile Internet access in order to address « potential issues regarding unjust discrimination or undue preference in the provisioning of mobile wireless data services. »
http://arstechnica.com/tech-policy/news/2010/07/canada-yes-traffic-shaping-rules-apply-to-mobile-data-too.ars