I think the concept of a user having an existing Gmail account if they aren't in the Google ecosystem is a bit of hubris.
There are many people I run across who bypassed the whole Gmail and Google Workspace ecosystems and have rolled along merrily with me.com and other email providers.
It's not a given that users will have bothered to register for a Google account unless they grew up in the Bay Area after a certain time period.
Wind back the clock to when Google tried to roll out Hangouts and the Gmail penetration rate was even lower among the non-Android users out there.
I'm just thinking of my own friends and family, who are mostly not tech nerds and none of whom live in the Bay area. Gmail launched with so much more storage than any other free email service everyone thought it was an April Fools joke (no doubt in part because it was launched on April 1). Everybody wanted it, and nobody who got an invite code before I did would give me theirs.
This is all anecdotal of course. Maybe it wouldn't have worked, but how quickly they gave up was weird.
Gmail as a product was simple - a better version of Yahoo or Hotmail where you don't have to worry about storage size nor have to sort emails into various folders. Search worked magically and spam filters were better than anyone else. In short, UX was superior.
Hangouts UX sucked big time. I remember lots of frustrating sessions with my parents about why video calls weren't going through, or how can some random family member join our family thread when they don't have a Gmail account etc.
I didn't intend a comparison between Gmail and Hangouts, just to say a whole lot of people already had the required account.
You definitely had a rougher experience with it than I did, but my main point is Google launched it, didn't seriously iterate on it, and gave up its strongest distribution channel at the first sign of pressure from carriers. Since they keep launching messaging products, I must conclude they want to be in that space and it was foolish of them to squander their best opportunity.
I remember laughing with colleagues as the first edition of the evening standard came in with the 1G gmail on the front page. I remember the exact location I saw it too.
couldn’t believe they had fallen for an April fools.
But that was a limited time window when gmail massively outweighed the 10-20mbit of things like hotmail with effectively unlimited storage.
There are many people I run across who bypassed the whole Gmail and Google Workspace ecosystems and have rolled along merrily with me.com and other email providers.
It's not a given that users will have bothered to register for a Google account unless they grew up in the Bay Area after a certain time period.
Wind back the clock to when Google tried to roll out Hangouts and the Gmail penetration rate was even lower among the non-Android users out there.