That to an extent, and also the fact that _real_ artificial intelligence - the kind that you could share exactly where you're up to with programming and it could tell you exactly what site to read next - that doesn't exist yet.

I once read that Google indexes 0.5% of everything publicly known.

That figure (0.5%) would suggest to me like theres a lot more room for disruption.

Yup. Google are doing everything they can to ensure their future. They know this.