Chris,
This is probably the last place to ask that opinion. But what it will come down to is economy of scale. Beyond just equipment deployment, bandwidth management, its also setting expectations of the wifi performance. In some areas you may not be able to get broadband with enough bandwidth the handle the load, which means moving onto sometimes very expensive enterprise class TDM or metro Ethernet based services, services with a much higher per month cost then local broadband.
But if you can find a way to balence all of that out, and with the recent advancements in wifi mesh networking, I think it is something worth putting effort into.
