It allows you to declare that your business is independent of telco tyranny. In order to answer those questions, I had to settle on which fixed wireless technology I would use. DSSS radios occupy a consistent piece of allocated spectrum constantly. There is an ongoing debate about which spread spectrum technology is better. Both direct sequence and frequency hopping systems have advantages and disadvantages inherent to the equipment used.
FHSS systems are capable of leaping past interference, but at the price of delayed data flow.
DSSS technology allows you to program past sources of interference, so the user does not experience delays. But interference can change and you have to re-program around it again in order to maintain speed. There are many different types of radio frequency interference. Either way, it's important to do some research before you get started to determine which type of 2.4Ghz equipment is already in your area so that you can plan your network around local RF interference. If there is other RF interference, then you might want to opt for a direct sequence system.