india does not lacks it, its not price competitive as compared to china which has better supply chain and economy of scale.
India and other countries are not going in fab for jobs but for self-reliance.
Going for high-value semicon later is similar to the logic of removing poverty first before investing in space tech. It doesn't work that way.
India had sound policies it was quite ahead of time when it created SCL, check this video for more https://www.youtube.com/watch?v=isBYV6QWDIo
it does lacks execution though and had some bad luck.
India does have 130nm plants right now its obsolete node but works fine for low volume needs of its govt.
it appears to me that redington is main accused and aws role is mostly as kind of witness. Headline is sensationalized, aws is named in fir, its not accused.
this should be faster https://github.com/webfft/webfft.github.io technically because it is using hardware for fft whereas current library is doing them on cpu but there is additional overhead with hw so we would actually have to test it.