Back in January and early February 2015 we took action after we discovered that a small number of professional CS:GO players were engaged in match-fixing. Our decision was to ban these players indefinitely from involvement in Valve-sponsored events. To clarify, the bans for these players are permanent, and players proven to have taken part in match-fixing will be permanently banned. -Valve
They didn't have set rules before the bans as they were the first ones to get it.
I get it that they should have consequences for doing so, but then again, CSGL: https://gyazo.com/c3a1003523c75a7de0210a8c885ba6cb
Banning them was a good way to show that they aren't fucking around but to perma is a bit since there wasn't any set rules & it will def shake up anybody afterwards now.