Originally Posted by DiapDealer
Readers share a big chunk of the responsibility here too. Just because authors are writing series that run to double-digit installments, doesn't mean fans have to continue buying them. If interest wanes and dollars start running thin, they'll wrap up and start something new. If you keep buying, however, there's no reason for them to stop riding the gravy train for all it's worth.
In the end, their fans would probably be doing them a favor.