Digital BW, The Print

Peter writes:

> Camera manufacturers need to sell NEW stuff
> to stay in business.

They've managed to do that with film cameras for a century, even when
bringing out new models only every two decades or so.  That has not changed
today.

> But once I bought those that was it - I kept using
> them but they didn't generate any new revenue for Nikon.

So how did Nikon survive and prosper up to the present day?

> Nikon can't rest on their laurels because they
> need a continuing revenue stream.

They can get that without turning over the entire world's inventory of Nikon
cameras every six months.