IIRC Hartblei bought all the stock and parts etc from the Kiev factory .
So it shouldn't be too much of a suprise that not many firm'd do rebuilds and repairs etc .
It's not like the independent repairer's can contact the original manufacturer to order parts up to repair your camera .
Once these bits run out , you would need to find someone capable of making replacement parts from scratch to repair your camera .
That might be economically viable for a Hasselblad , but a Kiev ?
As far as a lock of communication goes , the: the pandemic .