What he is saying is that Nintendo has the same fans it ever had plus new ones. The people that bought RE4 or Rogue Leader etc are still there.
And I have to agree that 3rd parties dont even try. Look at the best looking GC games and then look at Wii games. COD on Wii looks inferior to Splinter Cell on GC when it comes to lighting effects etc.
They port the game to the Wii remove eveything the console cant handle and thats it instead of adding effects the "last" gen can handle they simply dont care enough and dont fill the holes they made.
I would have bought Resident Evil Dead Space or Dragon Quest but the fact that all we got were "shitty" rail spinoffs made me not buy a single game.
Another problem the devs/publishers have is:
If they give the Wii a chance they give it a single one. They port something (inferior quality most of the time) and if it does not sell 1:1 with the number of Wii consoles out there they drop the Wii support again. Wait a few years and come back. You have to give constant support to gain any trust/fans/consumers.
They sinply dont think enough.
Everyone knows the Wii has alot of "casual" gamers. So thinking your game can sell as much as consoles are out there is stupid. Then thinking people will buy your inferior quality games is also stupid. Then thinking the userbase that was treated so bad with lack of games etc will jump back on board just because you bring a game to the console is also stupid.
The cant simply come and think everyone will forgive them etc. They need to win over the comsumers again because of all the crap they released and all the bad ports etc. And everytime they dont release a game of at least average quality on the console they show the Wii userbase how obsolete the company is. The Wii users jump ship to other consoles or simply think "pfft I lived years without you noone needs your games"
The more they ignore the Nintendo consoles the harder it gets to win over the audience again. They have to invest money and lose money to win over the audience again but they dont want to. And then they complain because thats what they can do best.