Because then his blog would be unavailable? The code points to the root of his domain. And even if he was willing to have his blog redirect to that other site,

Because then his blog would be unavailable? The code points to the root of his domain. And even if he was willing to have his blog redirect to that other site, there's still the issue about all these other misprinted codes. If they point to $randomblog it's mostly funny. If they point (via the redirect) to $possible_competitor, it's much worse