Roughly 3,100 tech start-ups employed 65,000 people last year, at an average of 21 per enterprise, according to Zinnov, a consultancy, and Nasscom, a software industry association. That is as much as 23% of the workforce currently employed by multinational R&D centres in India. By 2020, the workforce of 11,500 tech start-ups will be more than half the size of multinational R&D centres.