The problem is reversed. For companies trying, it's in their interest to wall off all their customers' info (and totally block all agents except, perhaps, their own). Agents are a nightmare "for personal information". Not really of course, or they are, but no-one cares. For companies they're just a really easy way to download your competitor's customer list, or having yours downloaded by your competitor.

Just like we have anti-scraping now, it seems to me to be in the vast majority of companies' interests to block agents from working. The big innovation of AI for companies and ad companies is simply that it may bypass companies security measures in a legal way.