Was it really a war? I don't believe anyone thought Google Plus would've actually stood a chance, and now it looks like G+ is splitting to many little micro-services such as spaces, Allo and Duo. Not the mention the whole YouTube users being constantly harassed to input their real name which gave G+ an even worse taste in their mouths.
Yes, it was a war. There were plenty of earlier social networks, like Friendster and Myspace, who probably looked down at upstarts like Facebook, shortly before getting killed by them. Facebook was in a good position, but it certainly wasn't invincible. And Google isn't just any competitor. This was back in the days when Google could do no wrong. They conquered the world in search. They conquered the world in email.…
It's one thing to have my search history. It's another to have my search history, identity, and email.
I resisted the pull of Gmail for a long time. Yes, I created an account (to forstall others from doing so, and, oddly, a highly distinctive name proved taken in multiple iterations, or at least unavailable, when I tried registering it). I've simply moved to using email very little.
G+ put the stink in though. I really wanted to like the service. I used it early on, and still do. I wanted it to be the anti- Facebook (which I do not use, or trust).
But multiple from the top decisions made, and still make it, exceptionally difficult to like. Sadly, there's little better (and I've looked).