Social media platforms are mature enough that half hearted efforts like Google’s won’t work.
But tiktok and Snapchat work. You know: real sustained efforts. Instagram launched 9 months before google plus. That should give you an idea of the landscape that google operated in. Instagram— with 13 employees at acquisition in 2012– works.
Google isn’t a determiner of what works. They’re one of the laziest implementers of new services/startups.. they literally throw something out there and try to coast off their name. In markets where the customers are mostly satisfied, lazy stuff like that doesn’t create a winning product.