Ever watched the credits on the games ? 
there as long as the movie credits.
Takes a lot of people to make games.

Even a Poser render
Vicky ,hair ,cloths ,poses ,props  & renderer. that's 6 people to make one render.

For fast CGI Stills just a single one frame render with no animation.
1.DAZ Poser / but you restricted to available characters ,hair ,cloths ,poses ,props etc etc.
2.Photoshop with at least a Wacom Intuos Pro Medium or better / but you half to have the skills to paint.

3. zBrush with at least a Wacom Intuos Pro Medium or better / but you half to have the skills to sculpt & paint.

The Artist I listed made there mark long before PC's.
The old ways just can't compete with Photoshop & zBrush.
For a lot of different reasons CGI is just more proficient then the old ways.

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The Artist that will fight for decades to conquer their media.
Even if you never know their name ,your know their Art.
Dark Sphere Mage Vengeance