Why has Nintendo given up on Metroid?

[DarkRPGamer007]

Metroid is awesome, but please look at sales

Metroid Prime GC 2002 Shooter Nintendo
1.96
0.67
0.10
0.09
2.82
GameCube sold about 22m

Now look at Mario's lowest (for main 3D Mario's)

Super Mario 3D World WiiU 2013 Platform Nintendo
1.07
0.57
0.59
0.15
2.39
It's lower but not by much. And with digital probably higher. Plus on a console with about 8m

And even Zelda (for consoles)

The Legend of Zelda: Majora's Mask N64 2000 Action Nintendo
1.90
0.67
0.73
0.06
3.36
Granted N64 did sell more than GameCube, but by 200 the N64 was dead, and this was the second Zelda entry. Metroid came back to GameCube after almost a decade hiatus from consoles.