Not sure about 'the market' demanding change. Perhaps you're right.
When I think back to 70s/80s, etc, for example, Citroen DS; 1955 -75 with one update mid-stream. CX? 75 - 90, same thing. XM? 89 -2000.
But Lex changed LS every.....3?
Can't be cheap!
Cars seem to be more 'throwaway' these days -well small ones, which are sold as designer wants.
...and Pete. I have a pristine Townshend Rock/Origin Live RB300/Denon 304 now unused (LPs sold) you can have....£850!