They Are Not doing it because they are not compelled by GOI for doing So.GOI Maintained Monopoly of Govt chumps in strategic defense contracts
If GOI Let them Green Signal Let them Build Parallel System To counter DRDO
Well DRDO Will have to Shut It Shop in 5 years
Let Out the Tender To develop cruise missile engine
And Let there Be open Contender ship With DRDO
The Winner Will get All Govt funding
You Will See DRDO Fate Will be Similar To Air india in Next few years
Private Firms Can offer Best indian & Foreign Minds To R&D Which DRDO not capable off
DRDO is a R&D organization and no private company can come close to it in terms of R&D even in the next 100 years . That's the harsh reality.
Indian private companies are mostly related to production / manufacturing because they don't find it profitable to engage in large scale R&D due to the large costs and long gestation time period.
Look around the world and see the top defence companies with own large scale R&D . Boeing , LM , Mitsubishi , Hanwha , Sukhoi , Mig , BAE , Leonardo , GM etc are top notch in R&D now because they invested in the same since last 50 years or so . Only then they are in a position to churn out competitive products with own IPR. They have pedigree .
And now tell me how many Indian private companies have that pedigree ?
Making claims is one thing and having the capability to convert the claim into reality is another ball game. Tell me how indian companies figure among top 100 companies in the world for core R&D capabilities ?.
If any private company had the capability to develop cruise missile engine with own IPR don't you think they would have intimated the same to DRDO who would have been more than happy to involve them or given them the task to develop the same .
No need to make even the operational version of the cruise missile engine , one can even demonstrate their capabilities by developing a scaled down lab prototype which basically will cost nothing .
Has any company done so ?
No
Why not ?
Because technological pedigree is not available.
Only since last few years some Indian companies have invested in own R&D, it will take sometime before it starts giving meaningful results. If Indian private companies start working on R&D in their respective sectors seriously , only after 5-10 years expect them to come up with competitive products with own IPR and that too is not guaranteed.
Also I support indian private companies more than anybody else , but point is I am aware of their advantages as well as their shortcomings. As I said before government must give orders to private companies so that they make profits and as a result they will themselves invest in own R&D over a period of time as they gain experience.