Why is there a lack of research coverage for 'disruptive' companies?

SINGAPORE Exchange (SGX) has, in the last two years, been aggressively wooing the technology sector, enticing tech startups to list on the exchange, and educating investors on new-economy businesses through workshops. But it may have its work cut out for it - no thanks to a prevailing absence of research analysts willing to stick their necks out for and put a valuation on these seemingly "disruptive" companies.

Take YuuZoo and The Trendlines Group. The former is a mainboard-listed social…