People do this all the time, but it's not marketed. When the control board for my washer died, I came across a bunch of Arduino projects to replace controls with new hardware.
As an embedded systems engineer, I even considered designing a replacement controller, but that thought died the instant I found one for $30 on eBay. That, and the reality of the situation is that when I can buy a replacement washer for $400, I have no incentive to spend dozens of hours redesigning a control. Maybe if I was bored and wanted to create an OSHW project that maybe 5 other people on the planet would use.
As an embedded systems engineer, I even considered designing a replacement controller, but that thought died the instant I found one for $30 on eBay. That, and the reality of the situation is that when I can buy a replacement washer for $400, I have no incentive to spend dozens of hours redesigning a control. Maybe if I was bored and wanted to create an OSHW project that maybe 5 other people on the planet would use.