To be fair, almost every non-Facebook social network has failed. I wouldn’t consider that to be proof that a limited social network can’t succeed but rather that social networking sites are difficult to produce.
No disagreement here. I just recall that guy being comically pompous (see also his penchant for carrying both a "day iphone" and a "night iphone") at the time Path launched.
Wow, what is it with anti-social people starting social networks? I long ago lost track of my collection of ridiculous quotes from the Friendster guy. But I still remember him being outraged that people were using it wrong by creating profiles for abstract things they loved (cities, parks, stores, brands) and then friending them. Like, buddy, when your users find new ways to use your product, run with it. Instead, he just got big mad and banned a lot of people.
Looking back, Friendster strikes me as the single biggest missed opportunity of that decade. He had a two-year lead on Facebook. In a network-effect business! But through careful focus and diligent effort, he managed to blow it.
That's why this has remained an idea for me rather than anything I would consider attempting. Social networks have an enormous bar to entry. This is why I think this would most feasibly be applied as a restriction to Facebook/Instagram and it's probably something they will never implement unless forced.