However, I claim that it can be expected to be sufficiently true for the next several decades, to the point that continued rapid development of India should not only be something the US doesn't have a problem with, it should be an explicit strategic goal of 21st century US foreign policy. It's not every day that self-interest and humanitarianism align so well on a matter of such importance; it would be a pity if the opportunity was not taken.
What has made the past 50 years so peaceful (amongst the big powers, at least) is that nations that share values have aligned. France and Germany and the US and Australia share a philosophy of governance, not just a short term realpolitik goal. (Of course sharing a language helps too: Canada, UK, US, Aus, NZ are tight for that reason in good part)
But I think the emphasis on values is unfortunately not true. The parent overlooks all the right-wing dictatorships that the U.S. allied with, from Indonesia under Suharto to Iran (under the Shah) to Iraq under Saddam Hussein (when Iran turned against the US) in the 1980s to Chile under Pinochet to the junta in Greece to Saudi Arabia to Egypt to Mobutu in Zaire/Congo to Central American dictators to many more on every continent.
And today, right-wing dictatorships are arising among NATO allies, but I haven't heard a word about ejecting them from the alliance.
India has only become a natural US ally fairly recently... And largely due to the 'frenemy' status that the US has with China. (Which in itself is a consequence of the 'frenemy' status that the USSR had with China... It's turtles all the way down.)
Through much of the Cold War, US-India relationships were very, very cool. Instead, they had good relations with Russia, while the US had good relations with Pakistan.
There's nothing 'natural' about nation-state alignment. It's all political, and politics is capricious.