I have a PC hooked up to my TV in my living room that has been running the latest version of Kubuntu for over 18 years now. It has had many upgrades in that time but it's still the same basic hardware: A CPU, some memory, USB ports, a video card, and an ethernet port on the back.
That "genericness" is what's missing in the router space. Literally every consumer router that comes out has some super proprietary design that's meant to be replaced in its entirety in 3-4 years. Many can run Linux, sure, but how many have a replaceable/upgradable board? How many are like a PC where you can install whatever OS you want?
Sure, you can forcibly flash a new OS (e.g. OpenWRT) but that is a hack. The company lets you do that because they figure they'll get a bit more market share out of their products if they don't lock the firmware so much. They key point remains, however: They're not just hardware—even though they should be!
The world of consumer routers needs a PC-like architecture change. You can buy routers from companies like Banana Pi and Microtik like this but they're not marketed towards every-day consumers. Mostly because they're considered "too premium" and require too much expertise to setup.
I think there's a huge hole in the market for consumer-minded routers that run hardware like the Banana Pi R4 (which I have). When you buy it, you get the board and nothing else. It's up to you to get a case and install an OS on it (with OpenWRT, Debian, and Ubuntu being the normal options).
We need something like the Framework laptop for routers. Not from a, "it has interchangeable parts" perspective but from a marketing perspective. Normal people are buying Framework laptops because geeky friends and colleagues recommend them and they're not that much more expensive/troublesome than say, a cheap Acer/Asus laptop.
> They key point remains, however: They're not just hardware—even though they should be!
This is the most thoughtful comment I've seen on this topic. I hadn't even considered this approach, but you're right. The hardware needs to be commoditized in a way that makes the software a layer that can be replaced. Someone else said this but in a way that described flashing a third-party package as HN nerds would. That's too much effort and it won't work.
It should be as generic as PC hardware. Every router manufacturer should build devices that can run the OSes of all their competitors' devices and vice versa. Maybe some features won't work with the other company's OS cause it isn't designed for that, but overall it ought to be replaceable. "Normal people" still wouldn't flash a new OS, but making it an option is a step towards making devices more secure.
If every router could get a new OS as easily as your techy friend could install Firefox or an ad-blocker or whatever else, we'd start the long march to a real longterm solution.