For what it's worth, I own a Unicomp keyboard I got in 2013 and it still works flawlessly to this day. Not doubting nor disqualifying your experience, but just want to provide a counterbalance.
This wasn’t rough use by me. It was barely used. It was a manufacturing defect and there is no way that Unicomp could not know after the keyboard was in their shop and unlikely they didn’t know before. You just can’t be in the keyboard business that long and not know what is going on.
They probably made good keyboards for a long time and might again. Mine was poorly made in terms of reliability and I don’t have confidence that they repaired it with more reliable components.