But then the customer gets frustrated and from now on decides to buy posters from a different merchant who accepts the forked coin, so now more economic activity ends up happening on the forked coin. So in anticipation of that, you are incentivized to sell your posters at enough of a discount, so that the customer is more willing to make an effort to figure out how to send you bitcoin that your node accepts instead of leaving for another merchant. Offering a discount is in a way paying to enforce your node's rules, or is that too far-fetched?