When the current publishing system stops, two competing forms of publishing may emerge: supply-side and demand-side publishing. Supply-side publishing focuses on author-pays open access models, while demand-side publishing migrates toward direct marketing to customers. Publishers will likely try to incorporate aspects of supply-side publishing like open access, while also adopting strategies from demand-side publishing such as collecting customer data and subscriptions. A new model of "attention publishing" may also arise, where publishers provide large libraries of content through subscriptions to monopolize customers' attention, similar to cable TV and Netflix.