Most of the last two decades were lost in the constant changes, delays, funding shortage, setup of test facilities etc that LCA program had to face and even after IOC approval until recently, the production rate was also fairly low. Not to mention, the MoD babus and IAF top brass were money hungry and wouldn't approve any deal until they receive their share of kickbacks and wouldn't mind killing any indigenous project in the makingU read can be right , it means it is one possibility ,other is no purchase and last is iaf going bonkers and buying 114 mmrca , but that's the least likely
Now things have considerably changed and DRDO along with it's entities have a ton of programs in the pipeline with significantly better project management, onboarded several private players and research/edu institutions along with the existence of labs and test facs. This wouldn't necessitate IAF looking outwards for it's needs