The sponsors of war list is a list of companies circumventing everyone else’s efforts to place a defacto embargo on Russia to show that their actions have consequences. When companies cross that picket line, they undermine the entire exercise, making it easier for Russia to continue operations. The idea, for the rest of us, is to in turn boycott the companies on the list so they’ll also experience their actions have consequences.
We have that luxury right now. Ukraine does not. So the idea is that we can help Ukraine by not doing business with companies that are making extra special bonus money by selling their products with a defacto monopoly in Russia right now