I looked at this subject about fifteen or twenty years ago-certainly when cassette machines appeared to have passed their Zenith and I found an article pointing out that many new models were still being produced in the far East to suit the continuing demand out there and [I think] African countries
I recall being re-assured that decks would be around longer than I'd imagined [given my large cassette archive ]. I wonder what might still be available now... in places like Hong Kong for example?
Dave W