Banning AI agents is the new "banning mobile browsers." Companies tried that too in the early smartphone era - remember when sites blocked mobile user agents to force desktop views?

The businesses that win will be the ones that build AI-agent-friendly interfaces, not the ones that try to ban them. eBay is protecting their ad revenue and impulse-buy funnel in the short term, but they're ceding the future to whoever figures out how to make agent-compatible commerce work.

Every product and platform will eventually have an "agent API" alongside their human UI. The only question is who builds it first.