Yeah, if you do use cloud storage in that vicinity, it makes the deal much better. At current prices, 500GB at Dropbox is $500/yr, and 1TB at G-Drive is $600/yr. Those will probably drop before the three years is up so you can't just multiply by three, but let's ballpark it and say it comes with at least $1k in cloud storage. Of course, that's only really worth $1k for people who were actually going to use that much cloud storage, but if you were, it makes the net cost of the device, vs. just buying the storage, quite small.
On the other hand, if you weren't going to use that much originally, but buying this machine lures you into storing everything on Google Drive, and prices don't drop a lot in the next three years, it might in the long-term be a very expensive device...
Jesus. That's approaching SSD prices for storage that's slow and patchy to access unless you're sitting at a desk plugged into a fiber connection, that Google is going to rummage through to sell you ads.