Here is the supposed reason for Sweden's success, from the World Economic Forum:
"Ten years ago, Sweden ranked no 17, but since then it has embarked upon a number of initiatives that have propelled it to the top. “Over the past two decades the country has undergone a transformation built on deregulation and budget self-restraint with cuts to Sweden’s welfare state,” says Forbes. It is also home to plenty of tech innovation and to “some of the most venerable, well-known brands in the world, including Volvo, Electrolux, Ericsson, IKEA and H&M.
Sweden has low levels of corruption and high levels of innovation."
