Google has decided that they’d rather not have all those videos people bought from them, so they’re taking them back. Sure, they’re going to credit the customers, but the end point is this: the consumers bought something, and now Google doesn’t want to have sold it, so — thanks to the magic of DRM — they’re able to call a mulligan and undo all those transactions.

First, it’s surprising that it’s Google doing this (their motto is said to be “Don’t be evil”). Second, this is pretty much all you need to know about DRM. If vendors have the ability to revoke your purchase later, they will. It’s DRM that allows that. Don’t patronize companies that foist DRM on their products; you’ll never really own anything that way.