[toast_coder]

If your negociating with walmart or mcdonalds you have nothing to offer in terms of skill. (for the jobs you are referencing)

Those people who have skills worth money like to negociate.

The great thing about that is everone can better themselves and be worth more.

[thomasahle]

Why does more skill imply negotiation opportunity? Because you can then threaten to go somewhere else? That depends on whether those other places have the same non-negotiation policy. That's the idea of a wage fixing cartel.