I work in Latin America and with the kind of low end phones and flakey mobile connections that a lot of people use here, 5-15MB is a pretty big issue. E.g. what

I work in Latin America and with the kind of low end phones and flakey mobile connections that a lot of people use here, 5-15MB is a pretty big issue. E.g. what I have seen from metrics is phones spending seconds just parsing/compiling those huge javascript bundles loading websites that don't do much more than turning json into html. A lot of modern web is a nightmare to use if you have a ~$50 android phone and are lucky if you have a decent 3G connection.