Expectations are high for the 2020 Tokyo Olympics.

Businesses cannot ignore the economic impact of sports. Japan will host "Sports and Culture Davos" in autumn 2016, in response to a proposal by the World Economic Forum, which organizes the Annual Meeting of the New Champions, dubbed "Summer Davos," where Japanese politicians and business executives are expected to outline the prospects of the economic effects on the country from the 2020 Olympics.

Since Tokyo won the bid to host the 2020 Summer Olympic Games last September, various think tanks have announced their estimates of the economic effects of the Olympics, with figures ranging from ¥3 trillion to ¥150 trillion.