That's typically the problem. The only "other" viable choices are typically other satellite internet providers.
There probably ARE other options. Some may not be any better. Some may have other limitations.
I faced the same thing with the house we've lived in for the past 15 years. There were not (and still aren't) any cable providers. There were not any DSL providers (until about a year ago). Cell coverage was spotty.
What I started with was ISDN through the phone company. It was slow (by modern standards, but several times faster than dialup) and expensive, but rock solid reliable.
Another option that seems to pop up in a lot of semi-rural areas is wireless broadband. This was the main option I've used for the past 10 years. It uses similar technology as the WiFi routers in our houses, except higher power, different frequencies, and there are towers spread around. You typically have to be within 2-10 miles of a tower, and a clear line of sight is very important.
A cellular modem/router can be a good option (if you have a good signal), but the biggest downside to avoid is bandwidth limitations. It's a good option to consider if you don't stream video.
I would suggest checking with others in your area to find what they use.
I'm SO glad we now have one DSL provider. It's been SO much better than any previously available option.