They have a limited pool of players to pick from.

Mr. Gingrich referred to a limited pool of money for states.

"This is the only way that anyone would receive some compensation from a limited potential pool of funds."

And the lack of job growth means that everyone is fighting over the same limited pool of jobs.

Artistic collaboration also has a practical side: several artists in one community, can, by working together, share a limited pool of local grant money.

Furthermore, plants in cultivation are likely to come from a limited genetic pool.

"You're talking about a limited pool of funds and schools having to make hard choices about who gets it."

It wouldn't, because the football playoff money isn't divided among teammates from a limited pool of funds.

Continued demand for a limited pool of workers could also raise prices.

This forces the university to recruit players from a limited pool compared with other top teams.