I know the first thing most people are thinking right now is, "who doesn't have connectivity in the 21st century". Well that might be very true. However, being in an African country (South Africa) the service providers may not always service 100% of areas. Outlaying areas often have poor reception.
If Acumatica has any plans for penetrating market in Africa, I think this is key to succeed as local competitors like Sage have incorporated this functionality straight off the bat.
It also might happen that people simply run out of data.