New Delhi: The NITI Aayog could prepare a blueprint for interventions needed to boost private sector investment in infrastructure creation, after a recent government survey suggested a likely dip of 25% in private sector capital expenditure in this financial year, said officials. While the Centre has been pushing for an increase in capex, the private sector has been lagging in this regard. A senior government official told ET the idea is to look at issues related to regulatory compliances, high cost of finance, inadequate availability of skilled manpower and further improvement in ease of doing business to instil confidence among the private sector to enhance capex.