The thing about token based business models is that the token captures the value of the network as it grows and it is the only business model that exists for the network. You can buy tokens if you want to speculate on the value of the network (or invest in the online publication business, as it were). You can earn tokens by participating in the network (or by publishing content on the online publishing network, as it were). You can spend tokens to participate in the network (or by engaging in or curating the online publishing network, as it were).