Residential usually has some kind of hard data cap. Like if you transfer >10TB they'll just cut you off. You're also generally barred from running any kind of commercial application.
For example, AT&T fiber has no bandwidth caps and offers symmetric 1-10 gigabit service in an ever expanding number of areas throughout the US. I pay $55/mo for 1gbps service, and have done more than 100TB/mo for many months and it's fine.