Sundar seems very confused here. The idea that we should invent AGI to make "personal digital assistants" is like Hogwarts students inventing time machines so they can take two classes at once. I mean, yes, it would technically enable you to do that, but it doesn't matter because at that point you have way, way bigger problems. If a fleet of alien spaceships arrived in the sky over Manhattan tomorrow, our first react…
It is true that we are probably quite far from AGI, but nobody really knows how far. We could be closer than most experts think. Few experts in 2006 would expect deep neural networks to beat a Go champion or be able to describe visual scenes in natural language sentences within a decade. Unexpected things happen, and we are much further behind in terms of preventive technology like Friendly AI. (https://en.wikipedia.org/wiki/Friendly_artificial_intelligen...)
Given the existential risks involved, I would propose more careful handling of the technology. (I agree that opening up most other technologies is usually a positive thing.)
See "Superintelligence" for comprehensive arguments against unfettered development of AGI: https://en.wikipedia.org/wiki/Superintelligence:_Paths,_Dang...