Still available in rural area.
Unreliable? Not if they use the right equipment. I have a business running on a 30mbps connection with a 20ms response time to google.com. They have multiple 10gb upstream providers for their connection. Equipment is ubiquiti. Depending on equipment, we have options up to a full 1gbps if they really wanted it.
It's running on 5ghz - yeah there's LOS to the tower. Signal is awesome, they said it can't really get any better and the CPE antenna is about 3 miles away from their tower. Stays up in all kinds of weather. Truly awesome stuff. Alot better than the equipment and technology we had around 12 years ago when I last worked for a WISP.
I have line of site to my tower and dumped wireless because it was $60 and we rarely got over .5 mbps. Usually .25 mbps.
I used to have long-long range wireless. Was called Sprint Broadband Direct - they had a tower like 20 miles away. That was $40 / month and 1 mbps.
Now I use a sprint unlimited plan to give my house 4gLTE at 4-8 Mbps for $39 / month.
Unreliable? Not if they use the right equipment. I have a business running on a 30mbps connection with a 20ms response time to google.com. They have multiple 10gb upstream providers for their connection. Equipment is ubiquiti. Depending on equipment, we have options up to a full 1gbps if they really wanted it.