I was surprised to read PG's mention that he was affected by Yahoo's C++/Perl rewrite of Yahoo Store (someone else has supplied the link). The dog food to eat

I was surprised to read PG's mention that he was affected by Yahoo's C++/Perl rewrite of Yahoo Store (someone else has supplied the link). The dog food to eat now is Arc, not Yahoo Store, isn't it? Wouldn't it have been more fun to just rewrite the original Common Lisp portion in Arc and host it himself, similar to how he's operating Hacker News? Or is Yahoo's promise of stability/uptime more valuable than having another anvil for hammering out Arc on?