A Zune?
The real answer is that MS does not provide ANY out of the box DRM for installable native applications, which frankly is the point he's making. Windows doesn't have a DRM model setup and in place that prevents you from installing and/or copying apps. If you get the MSI for an app, you can install it. There's no way, built into the system, to prevent someone from getting said MSI file and/or from installing it on a non-authorised device.
So the argument being presented is as such: If Microsoft doesn't provide DRM on their system (by default), and people still develop for it, then DRM is not a requirement for doing business.
Personally, I think the community here is strong enough that if you put out a decent bit of software for a reasonable price, you'll have people buying it up vs pirating it. The built-in DRM that OVI has now is strong enough to make it not worth hacking the system for a $5 app. (Angry Birds and Zen Bound showed this quite well...) DRM is about making it more trouble than it's worth to pirate... I think they've hit the mark at this point, and we'll see a slow trickle of things coming in soon.
In the mean time, the free software that's out there already is really a lot better than what many devices have in their existing for-pay app stores. If your concept of "good apps" == race car games, fart boxes, and playboy strip poker, then no, this is not your device. If your idea of a good app is one that lets you do something useful (like manage your finances, or remotely monitor your home), you'll find what you need here.