US is seller they will sooner or later sells its defense equipment from where ever it gets money it also gives them political leverage over the buyer, in India's they certainly need that. Avengers and S-400 will definitely come so does news of drone strikes inside pakistani occ kashmir.
US is a country, it has a very clear policy known as CAATSA, India is no special for them as long you continue with neutral policy for Russia. US has shown it in current trade war when they imposed tariff against india that is why indian economist have suggested to offer kind of bribe in form of purchasing 1000 civilian aircraft and step up oil and gas purchase from US in upcoming 2+2 dialogues. When Europe is showing resistance to US and Russia, China are increasing their influence, United states expect a lot more from india instead of just trade offers when other countries have more to offer to US, If india failed to meet their desired expectations then forget predator and expect more tariff and sanctions, The power balance of world is shifting again.