There's no mention of Google Voice. I've been hooked on it for 12 years, with my primary phone number being a Google Voice number for the last 10 years.
I've started using a lot of the suggested applications and services - Firefox, DuckDuckGo, Flickr - instead of Google's in recent years. I'm still using Gmail because changing my primary email seems like it would be a pain, but at least I can see that there are some strong competitors for email. Voice, on the other hand, seems like a pretty unique offering.