Hi Aastha,
Yes, there would be an impact on other institutions offering PGDM as it will create an anomaly by disturbing the equilibrium between IIMs and other PGDM institutions. So yes to some extent the value would be affected as of now and in the future, the impact would be more.
Hope it helps.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile