Some people, like Mike Hearn and Gavin have pitched a future where Bitcoin runs exclusively out of large datacenters and its users are left depending on the trustworthiness of a small number of organizations scattered around the world.
Hearn is out of the picture at this point, so I think it's a bit silly to keep bringing him up. That aside, would you care to back that up your assertion that Gavin sees Bitcoin the way you describe with some evidence? Here's my counter:
http://gavinandresen.ninja/does-more-transactions-necessarily-mean-more-centralized I chose 20MB as a reasonable block size to target because 170 gigabytes per month comfortably fits into the typical 250-300 gigabytes per month data cap so you can run a full node from home on a pretty good broadband plan.
-Gavin