If you're porting a game from one generation of a console to the next, especially within a family, why would you no🅺t put the DLC on the cart/download too? 𒐪Even Ubisoft did this and that's saying something.

Nah. PC has mods, and not those paid mods from Bethesda, or those curated mods from a handful of other ༺mod-supported games on console. But any mod you could think of (including the... unwholesome ones I suppose, but that's not the point).