Mmmm I'm not sure about that universally in cities at least. I have dynamo lights on one bike and I love them. BUT the wheels on a decent bike are already the single most expensive part and easiest to steal if you're sloppy about your locking. Dynamo hub + custom wheel build just doubled the value of what was already the most stealable component.
It definitely changes when and where I ride that bike in ways that don't always mesh well with the advantages of the dynamo. I still prefer it but if I didn't have a cheaper less desirable bike for some lockup situations I'm not sure I'd do it.