These were very simple cars to work on, their demise was when the import policies were set that forced a lot of business owners to abandon their ventures, and some had to pack up business due to religious terrorism.
In the end, business was lost, the jobs they provided were lost, the revenue movement that happened was lost.
And not about imports, some machinery/trucks were being assembled locally which also had to pack up.
Its quite a deep dive into history and reads like an unbelievably stupid act.