In this issue:

• Limits to Ad Price Discrimination

• Two (or more) Chip Supply Chains

• AI-as-a-Service

• Game Theory and Margin Calls

• Scale and Limits

• Trading Through It

• The Fame Business

Limits to Ad Price Discrimination

I've repeatedly sung the praises of the on-site ad model for e-commerce, at length here and in passing at other times. It is a great model, since it …