No!!! That's not the whole point. They're "Developer's kits". They're for developing your own software and running homebrew.
But most people use them for piracy, and the Chinese houses that make and sell them wouldn't sell $4 R4 clones if only developers were buying them... And all those updates to the system software wouldn't add patches for commercial games... And they wouldn't have clean/special/AAP/etc mode... And...
Sorry, just having some fun, not trying to pick on a noob. :-)
The only DS flash carts currently available that can't play commercial ROM's out of the box are the Action Replays, Code Cracker and the iPlayer... And even those can be "hacked" to do so.