Many colonies were expensive, money-losing ventures for investors. They were tough to get off the ground as the initial settlers struggled to survive. In the case of New France, it was barely scraping by until it came under royal control in the 1660s. The government then made a limited effort to recruit settlers (Colbert disapproved of it, thinking it would "depopulate" France), which was nevertheless enough to cause the population to
quadruple between 1665 (3,215) and 1685 (12,373). It didn't recruit much beyond that point though, and thereafter, New France mostly only grew through natural increase.
As New France's main export product was furs, which did not require much human settlement, its proprietors (whether private or government) didn't seem to see the value in sending large numbers of people over.