Disney is notoriously aggressive about digital rights. During the Tron: Legacy era (2009-2011), they experimented with "digital comics" via apps like Comics by ComiXology. However, Tron: Betrayal was published by Marvel (which Disney owns) in a traditional floppy format. They never converted it to a mass-market PDF because they wanted to sell the hardcover collection Tron: The Complete Collection (which retails for $29.99).

: Rising tensions between CLU 2 and the ISOs lead to CLU 2's eventual rebellion, the exile of Kevin Flynn, and the reconfiguration of the Grid into the world seen in TRON: Legacy Where to Read