Two kinds of people are shipping for two different reasons.
If you've never made a game:
No game-dev experience. One sentence in, a complete game out โ code, visuals, music, SFX, level design. Bring your own assets and keep shaping it.
If you ship games for a living:
An integrated production environment to get an early idea to a playable demo โ on a model stack tuned for game art, audio, game feel and numerical balancing, kept current so you don't rebuild your workflow every time a better model lands.