Tokyo is becoming an incubator of venture businesses as many young people — seeing the success of other entrepreneurs, who in turn have created a network of mentors and investors — are taking on the challenge of having their own business, aided by an improving economy buoyed by Prime Minister Shinzo Abe's economic measures, dubbed Abenomics.

"My message to the world's young entrepreneurs, engineers and tech investors is this: Forget that old 'Japan passing' story.... Come and be part of 'New Japan,' " said Yoshito Hori, a Davos regular who is president of Globis University and managing partner of Globis Capital Partners. "Come and build the next Silicon Valley right here in Tokyo."

Hori has a reason to be upbeat.