Wireless instead of adsl

Hi, I'd like to start a discussion about wireless vs adsl, I work for a WISP, and we're one of the best WISP's in SA with national coverage, & completely independant from Telkom and all the rest.  however I get alot of slack from clients that don't understand the technology, or that have had bad experiences with other companies in years gone by.

Now wireless certainly has come of age, & the guys I work for are really the top wireless guys in SA  our packages are better quality & service with lower latency, & higher uptimes than adsl and wi-max etc, but still IT technicians are afraid to go wireless.  How can i change this bad stereo-typed perception that is soo inacurate?

Our Diginet type VPN links are half the cost of Telkom, our wireless point to point links are faster & more stable than Neotel & 3G, our friendly service & support beats their call centres hand down, but still I struggle to find people that are willing to change over to a better service, it's almost as iff the monopoly has crippled peoples abilities to think outside of the box!