That's exactly how it has to be done. Google can't be allowed to copy the content or parts of it without permission of the creator. We shouldn't forget that they're making huge amounts of money by selling others work here. On the other hand Google claims to create "real value for these publications by driving people to their websites", which is often true in the short run. So the publisher can consider allowing copying parts of their articles. And Google could even consider charging them for this service.