Why don't academic institutions and researchers publicly discuss significant archaeological discoveries made on private property?

According to John Reeves, there's a deliberate culture of secrecy within academic and research institutions when significant archaeological discoveries are made on private property. Researchers and institutions actively avoid publicizing these finds, choosing instead to keep them hidden from public knowledge. This practice creates barriers to scientific transparency and historical understanding. The reluctance to share discoveries may stem from various factors including institutional politics, concerns about property rights, or potential controversies surrounding the findings. This secrecy ultimately hinders the advancement of archaeological and paleontological knowledge that could benefit broader scientific understanding.