EDIT: And by this I mean if you could generate Morrowind over and over again getting wildly different terrains and backstories and quests and NPCs, I would learn to mod it and never buy another game again until MMO graphical DF comes out.
Imagine regenerating Morrowind and getting, effectively, Skyrim instead. All the work of creating a procedural system results in the ability to generate many different games.
From a game designer's perspective this is especially attractive. You could even procedurally generate models and textures using randomized inputs, rejecting if they fall outside commonsense constraints. Then you step in and add the overarching story that ties it all together.
Once that software is made, you generate a game and sell just the generated game minus the generator. When people clamor for a sequel you hit the "generate game" button again and tweak it hands-on. You could see development cycles drop from several years and two hundred employees and managers to one month and a team of six.
With the money you make, design an engine for a flight / space / sailing / driving sim with randomized procedural generation. Push button and begin selling. Shift your huge dev team to the RTS game engine (hexagonal please!). Then the big dev team gets split into support for the three engines to keep them up to date with graphics advances, compatibility, and efficiency.
Can't be done?
FUEL did.