One of the reasons I'm routing for Starlink to succeed is situations like yours. Even if 80 miles from Seattle, that should be "close enough" that some fixed wireless company would want to invest in towers and infrastructure. There are just a ton of "rural" locations that seem to be out of whatever formula ISPs use to decide where to offer service.
I'm late, but I just noticed this. I'm not "rural." I'm right in the heart of the Washington-Boston megalopolis, and my house is less than ten miles from a real (albeit small] city. My Internet from when I first got Internet was DSL service from AT&T. A few years ago, AT&T sold their landline telephone and Internet service to Frontier Communications. Frontier made all sorts of promises to the state regulatory agency about improving the Internet infrastructure, yada yada, and the deal was approved. And then, of course, Frontier did nothing to upgrade the infrastructure. In fact, they apparently also did nothing to even maintain it, because speeds kept getting slower, and outages became more frequent. My typical specs with Frontier DSL (I just looked up a log from 2018) we 40 ms ping, 2.62 Mbps download, and 0.66 Mbps upload.
By mid-2018 the service was so degraded that the Internet connection would randomly drop about once every fifteen minutes. That's not an exaggeration. Three to five times every hour, no matter what time of day, it would just disconnect, then come back maybe five or ten minutes later. Their tech support couldn't help. When they sent a field technician, he said the problem was the SLIK at the end of the road, where all the lines to my neighborhood split off. He said that piece of equipment was an AT&T relic, that it was obsolete before AT&T sold out to Frontier, and that as far as he knew Frontier had no plans to replace or upgrade it.
So, as much as I loathe and despise the cable company that serves my town, I jumped to cable Internet in late 2018. I'm paying for "up to" 200 Mbps dpwnload speeds but, of course, I never see that. Typically, I'm getting on the order of 18 to 20 Ms ping, 80 to 90 Mbps download, and 30 to 35 Mbps upload. Not great, but significantly better than the DSL, even without the dropouts. I can watch most YouTube videos without having to wait for buffering every few minutes, and load speeds for most web pages is good enough that there's no perceptible lag.
But ... the cable company is a sleazy operation, and I truly wish there were another option available.