Andrew Nash, CTO of Trulioo, and a Google and PayPal identity alumnus, gets at the heart of why Internet-scale identity is pretty much stuck with only Facebook Connect. He offers some ideas about several ways to make it work for other large consumer IDPs like banks.
"In many parts of the world, governments have been trying to engage industry IDPs to provide consumer identities to support government & citizen service requirements. In cases such as the US FICAM these results have at best been marginal. [1]"
Andrew Nash: "Meeting an Immovable Object" - The Economics of Consumer Identity Providers
Additionally, Stephen Wilson, John Fontana, and Anil John have articles about related topics. Read those and more below: