You're not wrong, and when the part being cut is worth 5 figures for the raw stock, it's probably a criticality, but it's important to not gatekeep this process, lest it become a no-true-scotsman kind of thing.
I built a couple of 3d printers from scratch BECAUSE the various components were cheap and approachable. Haven't done CNC because my interests haven't taken me there...but the thing about advancement is: While one fella is saying 'You can't do it that way!' someone comes around and does it that way, and the first person is left in the dust.
You can't really stop Laser printers from dropping to many thousands of dollars to $70...all you can do is ride the wave.
I built a couple of 3d printers from scratch BECAUSE the various components were cheap and approachable. Haven't done CNC because my interests haven't taken me there...but the thing about advancement is: While one fella is saying 'You can't do it that way!' someone comes around and does it that way, and the first person is left in the dust.
You can't really stop Laser printers from dropping to many thousands of dollars to $70...all you can do is ride the wave.