Things like this we should collate all the technology and manpower we have under a single leadership. Will deliver quicker results.
GTRE and HAL should share the engine technology both of them posses and work together for engines too.
This should be the way forward. God please get someone who has actually studied MBA to oversee these operations.
Developers aren't always the leaders you need.
It will create monopolies. We are big enough to require competition.
We eventually will need private sector companies taking over because only they have the flexibility to stay ahead of the competition. PSUs need MoD permission for pretty much everything.