If I may, Titanium you come across as an ' establishment' professional.
As a proud Canadian who's served in war and as an aerospace industry insider, let's not be politically incorrect and get so hung up over 1 word - indigenous.
In the aero biz mock up's ain't everything, the damn tthing's gotta fly, safely. Standards is everything.
Why? When I was in engg. school, aerospace was reserved for govt. types. One went into the tough aero engg. and looked fwd. to a dead end govt. job It didn't fire up anybody' s mind. Aerospace in Asia is all politics and clerkship. This industry puts up with a lot of govt. propaganda.
In light of politics, and the type of risk averse middling folks who inhabit this murky aero. world, it's OK to go with the flow.
Important thing is an entire behemoth of a civilian aerospace complex is being kicked and knocked into shape. India did that with its auto, IT, steel, real-estate and media, and oil refining industry. Minted many billionaires. Step by baby step.
Personally, lack of funding, priority or policy;
old Colonial India fell behind and the rot continued with govt. re: easy, contemporay and do-able aero sector. Catching up is no crime. HAL went from top notch to also ran re: western competition and none others could take it on in the pvt. sector.
Until now! Watch and learn, never mind indigenous-pindigenous