Indeed, every improved product or service may make us no longer value products and services we previously used. That’s what Schumpeter called “creative destruction.” A longer version of the same phenomenon was on the front page of Monday’s Wall Street Journal, in an article about how Wal-Mart’s rivals secretly fund “grassroots local campaigns” against Wal-Mart, organized by political consulting firms, to protect the existing firms’ positions. Every innovator puts somebody out of business, as Agnes’s friend recognizes.