India is a different case they have been working on an engine for last 40 years and they are very likely to come up with their own 91kn engine in next 10 years and that’s the only reason why USA didn’t stop them from buying different GE engines for different blocks of Tejas
The Kaveri engine which Indians developed after an extensive research of 40 years produces 52kn of dry thrust and 81kn of wet thrust it’s currently under testing in Russia
idrw.org
Though 81kn is not enough to power Tejas series of aircraft because the GE F404 IN20 engines Used in Tejas produces 91kn of thrust but it’s still a big achievement they will use kaveri engine in drones and trainer jets.
The only thing where indians lack in engine technology is the hot core section particularly the metallurgy section but just because they don’t have the technology now doesn’t mean they won’t have it in future they are very likely to master the hot core technology in next 10 years.
Not to mention India is asking France , UK , and Britain to co develop an engine for AMCA with full IP rights over the engine technology now whether these countries would agree to this offer or not is a different thing but India will continue working on the engine anyway
India's Advanced Medium Combat Aircraft (AMCA) is slated for 2035 & Rolls-Royce, Safran & GE have offered to supply engines for AMCA Jet
eurasiantimes.com