The good ones are. The bad ones aren't - Ed Cotton: Are Ad Agencies Now In The Product Development Business? @PSFK

In this world of technological opportunity, agencies need to get involved in product development. This isn’t about creating a new beer, or launching a clothing line, but instead, helping non-technology based brands to embrace technology and to help those with technology, to make their experiences better.

Anyone that doesn't agree with this has been huffing glue for the last 15 years.