Business costs more because it’s less oversubscribed than resi, also is intended to be more robust in terms of change windows, and depending on your provider may have some best effort SLAs.
Business class in airlines -- goes the same place as coach, but "the service is better". Actually what they've done ist o mindfully take away from coach to stimulate upgrades to business class.
I signed up for business internet just so I could get a static ip address. Other internet services like sonic will give you a static address if you ask.
