Even when there exist technological solutions to big problems , there's usually a need for strong political component to make them work. Two examples are the birth control pill and the industrial revolution. After the birth control pill finally enabled women to develop careers, it took and is taking a long political struggle for them to have equitable jobs. And even as the industrial productivity increased productivity greatly, people were forced to leave their homes and work long hours for barely subsistence pay , until the worker movement succeeded in helping them.
In a world where technology is relatively abundant, the hard problems are still political(at the country, industry or company level).
Likewise, when a publication focused on politics analyzes problems, the solutions are always political, never technological. If you follow the author's logic, most of the issues presented in TED talks could be solved with laws.
I'm quite cynical about the somewhat simplistic solutions offered by some TED speakers, but I don't see laws and political debate solving most of the problems TED discusses.