If you watch the talk, their main problems were designing Persona as a hosted service within Mozilla so that others could not replicate, and creating it as a pr

If you watch the talk, their main problems were designing Persona as a hosted service within Mozilla so that others could not replicate, and creating it as a product and not a platform so success was measured the wrong way for what their aims should have been. I was in the audience for this and it was a great talk, recommended watching.