There are many reason I say this. Driveclub at retail costs $60/50 Pounds/60 Euros while it costs just $50/40 Pounds/40 Euros for the digital version if you have PS Plus. Also most of its customers will likely first try out the PS Plus version, and then upgrade to the full version. In that case upgrading digitally is just the cheaper and easier option. So yes, I predict that 80% of Driveclub's sales will be digital.