The best way I've find out if you're "on net" (have fiber going to your bldg or near it) is to befriend someone in the networking and telecom space who hoard KM

The best way I've find out if you're "on net" (have fiber going to your bldg or near it) is to befriend someone in the networking and telecom space who hoard KMZs files that map out what's installed (each telecom develops them and shares them internally and sometimes with customers). I know of folks who treat these like gold and carry them from job to job and have most of the US and other nations covered. These are the folks I call when I need an address lit up to see which options and which carrier is out there vs. contacting one who is going to try to work it thru them. Most metro areas if you're on net you can get dark fiber for a flat monthly fee. Construction and permitting will bring an additional cost and things are delayed quite a bit with covid. I've known a few folks who've got their own dark (or point to point wireless) to colos in downtown areas where they and their friends will rent half a rack or less to drop in a router and buy cheap transit and become their own little ISP.