Anecdotally, the people I know who do console gaming are really fed up with the lack of backwards compatibility; New console comes out, all your old games are now incompatible.
Now PC games often lose backwards compatibility when upgrading OS versions, but patches, compatibility modes, and even VMs are realistic options and ones that people will use.
(My money is on "I already have this computer for work" being the single biggest factor, with "the graphics can be better on the PC" being #2.)