Bank financed infrastructure already enjoys considerable amount of regulatory dispensation. This makes the issue, of finding alternative sources of finance for infrastructure projects, critical. RBI has already taken a number of measures in this regard including permitting higher exposure limits for infrastructure, introducing repos in corporate bonds, permitting CDS for corporate bonds, creating a separate category of NBFCs (NBFC-IFCs), etc.
To put it slightly differently, uncertainty is a type of ambiguity where the probability of an act or outcome cannot be calculated whereas a risk has some element of calculation - there is a certain probability of some known act or outcome occurring.