Is this really the right comparison?
Apart from the SawStop folks, how much has table saw technology changed in the last several decades? The table saw I use (Rigid, and has been super-solid for me…nothing fancy but does the job) is not fundamentally different from the Delta I had in my shop back in my theatre days in the early 90s.
I would LOVE for 3D printers to be in the same class as my other shop tools in terms of being essentially commodity technology, but I don’t think we’re even close to that yet. Bambu, one could argue, is the closest from a polished engineering and design standpoint, but I would not wager a penny that the X1 will be supported or usable 20-30 years from now.
I am cheap across the board, but I don’t generally buy the cheap shop tools at Harbor Freight, precisely because I know I want to use them for years and years, and perhaps some day pass them on to my sons.
My expectations for PCs, phones, and especially printers are a little more measured in terms of lifespan. If I get 5 years from a printer, I’ll consider that a good run.
In fairness, though, my current Octoprint device is a 10 year-old OG Surface Pro running Ubuntu, so I suppose I do manage to get a good lifespan from some of my electronics. 
I do think your overall point is a good one…sometimes we can focus too much on price, and not enough on how much value we get from something, particularly in comparison to things we spend more on.