Easy. Stop making affordable consoles, or stop making worthwhile games.

1.) Not make a good Zelda for Wii U.

2.) Drop support for Dragon Quest. If they advertise Dragon Quest VII 3DS well enough it would sell well over 1m copies outside Japan.

3.) Make another game with the "Super Mario 3D" prefix.

4.) Stop producing consoles+ handhelds.

5.) Miyamoto passes on... to be with Mario.

If they stop being Nintendo.

- That sentence is deeper than you think.

There is only way for Nintendo to lose me as a customer.

They would first have to somehow obtain me as a customer. At that point, I would immediately stop being a customer.

I did not read the OP.

stop making Zelda and im gone

This

I was gonna write this, but I saw NPie beat me to it... And yes, this does cut deep when Nintendo stop being Nintendo.

Basicly saying they lost their soul to a Poe. .  .

As long as they keep making their games (as they do now) on a platform I own, I will continue to buy them.

However, I'm not willing to purchase a console solely for playing Nintendo games which means I'll probably miss WiiU this generation due to it's abysmal 3rd party support. However, I'd buy their games on Wii still, wish they'd put them out for both systems (WiiU/Wii).

If they charge for online play then I will immediately jet the fuck out, and later pick up a very cheap priced product and dirt cheap games to play SP or local MP games only. If I even feel like it.....

If I get bored with Nintendo games, I'll stop buying them.

I loved most Wii games from Nintendo (Mario Kart, Brawl, Metroid, both Galaxies). However, Nintendo's Wii U offerings all look extremely unappealing, except for Mario Kart. We'll see what the future holds but I'm expecting the Wii U to be my last Nintendo console if things don't improve.