Why does Nintendo take that long to make games compared to HD consoles?

[kylohk]

If one thing, I hope that Mario/Zelda games have a shorter gap between subsequent episodes. Just look at the following gaps!

SMW -> Mario 64, 6 years
Mario 64 -> SMS, 6 years
SMS -> SMG, 5 years

Even the Olympic games and the World Cup (sporting events which I consider horribly long waits) occur more frequently than Mario games! If Nintendo could release Mario games as frequently as they made the first Super Mario Bros. series, then I'll be happy.