The Wii was already fading out in sales and stores cause the Wii-U took over, now 2 years later we see a descent piece of software on Wii and Wii-u to run backup Gamecube iso's from external hdd (you could earlier with othe rmethodes)
So basicly
Nintendont lets you play Gamecube iso's from external hdd on Wii and Wii-U (in vWii)