Pro Commerce advocate, Michael Phillips, has an interesting piece on how promoting commerce can make a city prosper.
The question of whether government policy can fortify commerce or stultify commerce has a very simple answer: it can. The empirical proof is the town of Emeryville.
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The difference: Berkeley is run on the principles of Cuba, by Left wing ideologues and Oakland is run on the systems common in Nigeria, corrupt-cronyism.
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There you have it: empirical, visual evidence of what works and what doesn't work. Pro commerce is prosperity, anti-commerce is crime, depression, boredom and malaise.
And a nice fly over video of Emeryville:

Emeryville joins Corporate Accountability International and others to promote tap water as safer and more environmentally conscious. The campaign encourages cities to stop using public money to buy bottled water for its offices and to press for greater disclosure of where the water comes from that goes into the bottles, though the pledges vary based on what each city decides.