OK I've read some Amazon reader reviews and it seems like the alternative strategy is to simply give tasks or set goals and leave rewards or punishments out of the picture.

As one reviewer put it: "I believe Kohn realizes rewards are necessary, just not the rewards/reinforcement that have been in use. Learning is its own reward. If this wasn't true, why would these people who reviewed the book have read it? Were they paid to read it? Love is its own reward. Meaningful debate/discussion is its own reward. Generosity is its own reward. Using these as your reinforcers will bring results."

I know this is true, but it doesn't help. Incentives are a side-effect of competition for talent. If a business owner or manager doesn't offer them, people will find the above intrinsic rewards and enjoy them, but will still leave once the competition comes knocking with carrots.