Is it anti-competitive? Apple literally told them how they could reapply the app in a way where they would owe Apple $0.

Which again, Basecamp already does. They know this is how it is and how to work around it, but they're pitching a fit because they don't want to do it.

I'm a bit ornery about this because Basecamp is using the plight of other developers now only because it suits their bottom line. Where have they been for the past decade? They've been raking in money off the App store for years.