The craze for content bundles is as much a delight for consumers as it is for ISP accountants, streamers and Canal+. It’s all about finding ways to reduce the share paid out to rightsholders. Here’s how… ISPs and tax tricks have a long history… Free, which yesterday unveiled a supercharged content offering with its latest Freebox, is not the last in this game. And it’s fair game. Canal+ and streamers are also adepts, and they have all found a cardinal virtue in these accounting practices: to reduce the share paid to rights holders at the end of the chain. That’s just…