Internet regulation: is it time to rein in the tech giants?

Fake news and Isis propaganda have raised concern about the power of the web. But with cyberspace controlled by a handful of giant firms, can governments ever hope to curb them – and is that even desirable?“Enough is enough,” said Theresa May outside 10 Downing Street after the London Bridge attack last month. “When it comes to taking on extremism and terrorism, things need to change.” And one of those things was the behaviour of internet firms, which should not all