T-Mobile Home Internet is already available to 30M households in the US (out of around 130M households so around 20-25% of US households). T-Mobile is looking to have 7-8M subscribers within the next 5 years which would make them the 4th largest ISP (behind Xfinity, Spectrum, and AT&T). Verizon is looking to cover 50M households by the end of 2024 which is years away, but shows that 5G home internet is coming.
Wired home internet companies aren't avoiding installing a wireless link at the end of their fiber out of spite. It's a combination of who has wireless spectrum and the technology/capacity available. If you're talking about Xfinity or Spectrum, they don't have the wireless spectrum to offer that. If you're talking about Verizon/AT&T/T-Mobile, they're working on it, but it takes time for the technology and spectrum to be there to provide the capacity people expect for a home internet connection. The recently concluded C-Band auction means that wireless carriers are going to have more spectrum available to provide more capacity (and they spent nearly $100B getting it). 5G NR provides more speed and capacity.
If it was just out of spite, Verizon/AT&T/T-Mobile would have been offering wireless home internet for years in areas where they had no wired network. They weren't getting the money in places where they didn't own the local telco (which for T-Mobile is everywhere and for Verizon/AT&T is most places). Even when they owned the local telco, most people would be buying cable internet.
The problem is that home internet isn't easy. A wireless customer probably uses 10GB of data on average. Streaming HD Netflix is 2-3GB per hour. Home internet usage is usually an order of magnitude higher (and can be even higher than that). Basically, you need to increase your network capacity by at least 10x if you're going to be signing up home internet customers. With new technologies and spectrum, that's what wireless carriers are doing over the next 1-5 years.
I think that terrestrial wireless will be big in the future, but it's not because of Starlink putting pressure on telecoms. It's because their networks are going to be seeing massive capacity upgrades over the next few years that will enable it. Verizon/AT&T/T-Mobile would have loved to offer wireless home internet years ago, but the technology and capacity simply wasn't there. I mean, they did offer home internet years ago, but it often cost hundreds of dollars a month and was only available in really rural areas (not just places that might hate 20Mbps service). But new tech and capacity gains are allowing them to offer new service. T-Mobile is first out of the gate because it got new spectrum earlier, but Verizon and AT&T will be following in the coming years.
But it appears to only be available to people in mid sized cities. In other words, people that already have somewhat acceptable internet service options.
The problem is the metastasis of ridiculous dynamic content that is driving up bandwidth requirements and latency and delivering a reduced quality Internet experience in return, not because dynamic content is intrinsically bad, but because of how it's being utilized.
But in both situations I've lived through recently, the fiber has been just out of reach along main roads for some time now. And I know a bunch of people in similar situations on side streets where AT&T and XFinity declined to extend service after building the infrastructure along main roads to do exactly that.
Anecdote: during 2019's power shut offs because of high winds, my house lost power for 3 days, but my neighbor 25' from me did not lose power. Seems like a similar situation in some ways. Both of our houses were on hills served by separate power lines less than a quarter mile from a main road. The only qualitative difference I can think of is that the last 200 ft to my house is below ground.
Upgrading to my first 5G phone recently made voice service work at my house but did nothing for data.
Keep in mind T-Mobile and AT&T are entirely different providers. AT&T coverage may be better where you live.
Edit: I just walked through the neighborhood repeatedly invoking speed test and I can get 50 megabits at various points. But I can't get it anywhere on my own property. There's no real rhyme or reason that I can see as to where it's good and to where it's bad.
I imagine once Starlink is an actual choice, the telecoms will install wireless at the end of the fiber and offer you faster, more reliable service than Starlink.
They don't do it now because they get your money without having to do anything at all.