several start-ups folded on me, perhaps this was the most flagrant technical debt among them: Octek [then Octek-Foxboro, then shuttered ] was state of the art machine vision in 1980 but stuck with PDP-ll bus+boards in a box instead of investing in microprocessor single board systems and stuck with an odd-ball interpreted language "Magic-L". By 1986 they got run over by competitors with much lower price points and higher inspection rates. I could still make the boxes do the job but it was boutique stuff by then.