Bottom line is that if Google were to disappear tomorrow as you say, along with Gmail, Analytics, Adwords, etc. it would have a huge emotional impact that can't simply be replaced by switching to Yahoo or Bing for most people.
Why would you need analytics and adwords if Google had gone.
How attached are you to an email address.
Would people make the connection "I'm not using Google because they just fill my face with advertising" will not connect with most people to the possible outcome of "Oh no - they are stopping GMAIL" (likely many years later)
Yahoo emails were THE emails 13 years ago, So was Yahoo. You can still get them now, I still have the same btyahoo mail I had in 2002. But Yahoo? Compared with the late 90's....
Yes they are synonymous. Like "Hoover" is still a synonym for Vacuum cleaners in the UK (Get the Hoover out love, there's dog hair on the carpet)... but what people actually get out is very rarely a Hoover these days. It's an Electrolux or AEG machine.
People might still call it "Google-ing" when they use another service.
The service is no longer associated with the service supplier. It's generic
We still can with the term PC. To begin with the term PC was only for IBM machines, hell they even tried to copyright the term (ridiculous to think now) it's such a generic term "personal computer" but for years PC meant IBM and ONLY IBM. Now people still use it. Half of those under 30 might not have even heard of IBM. What was once a synonym for the worlds biggest brand up until the early 90's meant zilch just 5 years later. IBM were huge, Apple (and Apricot) were so far behind in all sectors other than desktop publishing there really was no other option....gone, and with it the term fell into common use.
SE's might have emotional connections with adsense or analytics, it's part of our livlihoods after all.. but the vast
VAST majority of Google users are not SE's, they are people like my mum and dad, my friends and family who don't even know what SEO stands for and care about it even less. They couldn't give a flying fig about Gmail, analytics or adsense (and have never even heard of the last 2).
But my dad has been moaning about Google search results for some time now. "Where's the number for that take-away..why is it buried under all this crap" was a rough paraphrase of the last words he spoke about the subject.
I suspect he is not alone.
Scritty