95% of business software has no API — agents cannot touch the apps that matter most

Most business software (Salesforce admin panels, SAP workflows, internal tools, legacy ERP systems, government portals) either has no API, or has an API so limited it covers 20% of what a human can do through the UI. So what? Agents are confined to the tiny slice of software that has good APIs — developer tools, cloud platforms, modern SaaS. The highest-value automation targets are exactly the ones agents cannot reach: data entry into legacy systems, navigating bureaucratic portals, operating enterprise software that was built in 2005. Why does this matter in the first place? The companies that would pay the most for automation — enterprises drowning in manual processes across dozens of clunky internal tools — are precisely the ones agents cannot help. Browser automation (Playwright, Puppeteer) breaks when a CSS class changes, fails on dynamic SPAs, and gets blocked by bot detection. Computer-use agents that operate via screenshots are 5-10 seconds per action and misclick constantly. The structural reason: building good APIs is expensive and most software vendors have no incentive to do it. Their moat is the UI — making it agent-accessible would let competitors build better interfaces on top of their data. And the agent-accessibility problem is circular: vendors won't build APIs until agents are useful, but agents won't be useful until vendors build APIs.