Dark Fiber Networks Market Size and Forecasts (2020 - 2030), Global and Regional Share, Trends, and Growth Opportunity Analysis Report Coverage: by Fiber Type (Single Mode, Multi-mode); Network Type (Metro, Long-haul); End-user (Internet Service Providers (ISPs) and Telecom, Oil and Gas, Hospitality and Retail, BFSI, Healthcare, Others) , and Geography (North America, Europe, Asia Pacific, and South and Central America)