Xero CEO Sukhinder Singh Cassidy predicts a "SaaSpocalypse" for thin-wrapper software and reveals what comes next: "I coined a term called SAIS, software as an intelligence service. It's a tale of two cities. Companies that are thin wrappers where you can easily replicate that thin application on a Claude, its defensibility is only the application layer, and those companies we think are more at risk." "I'm sitting at Xero with 5,000 employees, a big purchaser of enterprise software. I'm…