Indian Cinema is not just about Bollywood
As a result, claiming that bollywood constitutes the indian movie industry is akin to claiming that hindi is India's primary language, which it is not. RRR's achievement as indian cinema's biggest action movie ever, featuring bollywood A-list performers, was covered by a few overseas news sites and it's time to acknowledge something beyond the boundaries of Northern India.
Although hindi is the most widely spoken language in india, there are 25 other official languages. The link here is that the film business is separated by language and state, with each state having its own cinematic taste and flavour. South films are unable to capture the spirit of partying and culturally acceptable humour in the same way as bollywood films do. Likewise, the North is unfamiliar with the South's thought-provoking and genuine story-telling.