Out of sheer curiosity, I decided to see how true this claim was that Nintendo has abandoned its core fans, which for Nintendo means fans of its core franchises (as opposed to self-identified "hardcore" gamers obsessed with first-person shooters and racing sims, to whom Nintendo has never catered). Every time Nintendo announces an expanded audience title, there is a great outcry from the gaming press and fans that Nintendo has abandoned them, implying that the core software support was much better on the Gamecube. I bought into this narrative myself. I decided to compare first two years' worth of Nintendo-published titles on the two consoles and found the opposite of what I expected--Nintendo's "core" support is actually much better on the Wii.
So here you go, the first two years in no particular order:
Gamecube:
Luigi's Mansion
Wind Waker
Mario Sunshine
Metroid Prime
Animal Crossing
Pikmin
SSBM
Eternal Darkness
Star Fox Adventures
Wave Race: Blue Storm
Mario Party 4
Disney's Magical Mirror
NBA Courtside 2002
On Wii
Super Paper Mario
Twilight Princess
Mario Galaxy
Metroid Prime 3
Mario Kart Wii
SSBB
Wii Sports
Wii Play
Fire Emblem: Radiant Dawn
Mario Party 8
Mario Strikers Charged
Link's Crossbow Training
Warioware: Smooth Moves
Excite Truck
Pokemon Battle Revolution
Battalion Wars 2
Endless Ocean
DK Barrel Blast
Big Brain Academy: Wii Degree
Mario Super Sluggers
I put the "core" titles in bold, where "core" is loosely defined as "the sort of games Nintendo fans have been buying from Nintendo years now." Mario Party is either a core title (because it's on its 8th iteration, and each one sells platinum), or the original expanded audience game, take your pick. Either way, GC and Wii got one in their first two years, so it doesn't matter. Animal Crossing has always been a non-traditional/expanded audience game IMO. DK Barrel Blast, Luigi's Mansion, and Link's Crossbow Training were left off as sort of shallow, throw-away titles. Some people might argue the two cross-platform games shouldn't count, but since they (a) are nonetheless available for purchase on the Wii and (b) core franchise titles, they count.
Anyway, no matter how you slice it, Nintendo has actually done a better job of supporting its core fans on Wii than on Gamecube. I count 10 core titles on the Cube and 13 on the Wii. The only thing you can really say is that Nintendo didn't deliver the graphical upgrade we've become used to. But on the software front, there is simply no credible reason to say Nintendo has "abandoned" its core.
So here you go, the first two years in no particular order:
Gamecube:
Luigi's Mansion
Wind Waker
Mario Sunshine
Metroid Prime
Animal Crossing
Pikmin
SSBM
Eternal Darkness
Star Fox Adventures
Wave Race: Blue Storm
Mario Party 4
Disney's Magical Mirror
NBA Courtside 2002
On Wii
Super Paper Mario
Twilight Princess
Mario Galaxy
Metroid Prime 3
Mario Kart Wii
SSBB
Wii Sports
Wii Play
Fire Emblem: Radiant Dawn
Mario Party 8
Mario Strikers Charged
Link's Crossbow Training
Warioware: Smooth Moves
Excite Truck
Pokemon Battle Revolution
Battalion Wars 2
Endless Ocean
DK Barrel Blast
Big Brain Academy: Wii Degree
Mario Super Sluggers
I put the "core" titles in bold, where "core" is loosely defined as "the sort of games Nintendo fans have been buying from Nintendo years now." Mario Party is either a core title (because it's on its 8th iteration, and each one sells platinum), or the original expanded audience game, take your pick. Either way, GC and Wii got one in their first two years, so it doesn't matter. Animal Crossing has always been a non-traditional/expanded audience game IMO. DK Barrel Blast, Luigi's Mansion, and Link's Crossbow Training were left off as sort of shallow, throw-away titles. Some people might argue the two cross-platform games shouldn't count, but since they (a) are nonetheless available for purchase on the Wii and (b) core franchise titles, they count.
Anyway, no matter how you slice it, Nintendo has actually done a better job of supporting its core fans on Wii than on Gamecube. I count 10 core titles on the Cube and 13 on the Wii. The only thing you can really say is that Nintendo didn't deliver the graphical upgrade we've become used to. But on the software front, there is simply no credible reason to say Nintendo has "abandoned" its core.