People are using ADSL more and more these days for Businesses, and it works, well , sort of.
Looking at Neotel's www, they actually don't have a service called "NeoFibre". The www is divided into a few sections, depending on what type of market segment one belongs to. Home user, small , enterprise etc. I would guess then that instead of getting a proper Internet feed , called,..surprise..., NeoInternet!, they opt for the cheaper NeoBroadband Fibre. NeoBB Fibre works well, but there is a cut off point where NeoI is better suited, if one can afford the extra cost. Every site is different, thus 150 "lite" users may survive, but 30 heavy international users may not.