I think the article is not attacking Facebook or Twitter. It's attacking the infinite clones of them.
I'll give you a problem: There isn't a PHP Qr Code decoder in the web.
Why hadn't anyone gave a damn about it? Because it's hard, take time and you simply don't know how to start and how to monetize.
I'll give you another problem: Google don't happen to give the best search result. You'll (in many cases) get SEO spammed results. Why not re-invent a new search engine? Sure there are SE startups, but not enough for the solution to get solved.
Why hadn't anyone gave a damn about it? Because it's hard, take time and you simply don't know how to start and how to monetize.
I'll give you another problem: Google don't happen to give the best search result. You'll (in many cases) get SEO spammed results. Why not re-invent a new search engine? Sure there are SE startups, but not enough for the solution to get solved.