Broadband wireless can be more affordable and resilient then any other option, including cellular, landline or cable. Hayden Island provides a potentially large market for broadband because many residents are live-aboard boaters or full-time RVers.
Satellite internet works when cellular is down. CBRS in a mobile hotspot (above) uses the (no cost) shared 3.5 GHz band. Together they can provide resilient and cost/effective neighborhood broadband.