because we are both a big country and heavily polarized, we struggle with infrastructure. both 'sides' will fight and resist all big projects. i guarantee the interstate highway system could never be built in current climate. this is primarily due to multiculturalism creating increasing political chaos since 1965.  this applies to internet infrastructure too, of which mobile towers are part of. most areas only have 1 or 2 isps to choose from, and on mobile side i think there's 3 mobile companies left. so they can jack up the prices as much as they want along with restrict bandwidth, because who else are you going to use?
United States