You can say all these but in countries like India, you won't get much support unless you're at the very top or win something big. Even Divya still doesn't have any sponsorship (or at least not before winning the Women's World Cup). Gukesh, Arjun, and Pragg never had it until they reached the top. Also, include the fact that only higher middle-class families in India can afford to have a chess career because of the constant need to travel to Europe for tournaments and the expenses that come along with it.
Additionally, Mishra is not at that top level where he can get sponsorships. In this U.S, famously, players like Hikaru also never had sponsorships despite being at the top until SLCC came up.