Movies generally reflect the tastes and the level of intellect of their audiences. By this measure, often it is only the Malayali and Bengali audiences in India that pass muster in terms of appreciation of cinematic skills, level of understanding of the visual art, understanding what is 'good cinema', appreciation of good humour (though cinema of low quality do get made in these two languages also)......
The substantial lag in these matters that the remaining language groups suffer from are demonstrably reflected in the extent of drivel that is made, hyped and bandied about as 'popular cinema'. 'Bollywood', 'Kollywood', 'Hyderawood' and so on are conspicuous examples........