I've had no shortage of people looking for custom websites. Having a fully-customized identity throughout, warranted or not, is still very important to a lot of clients. You still integrate with third-party services, whether it's social media sites, blogs, or e-commerce--but even then, these clients want it to feel like their own, not some generic, off-the-shelf product.

Also, I've shown clients pre-baked themes to save time & money and they've been quite offended, or agreed to use one, but then ended up changing the theme so much, it was hardly worth the effort.