In regions where high-speed unlimited fiber isn't available or mobile data is expensive, downloading a 300MB file is significantly more economical than streaming a 2GB HD file.
If you love the idea of small file sizes but want to stay safe and support the creators, many official streaming platforms now offer "Data Saver" modes: 9xmoviescom 300mb movies
Navigating the World of 9xmovies: A Guide to 300MB Movie Downloads In regions where high-speed unlimited fiber isn't available