The highly successful, 30 year old model of shared library cataloging is coming to an end. The near universal acceptance of common rules and norms of practice is eroding for reasons both practical and theoretical. Major stakeholders are reclaiming those stakes to invest them elsewhere, diverting resources from cataloging to new initiatives, most directly to creating metadata for digital and archival collections. Libraries are experimenting with new standards and no standards, engaging new partners on new terms. The recent Library of Congress decision to discontinue series tracings and related series authority work provides a dramatic example and may be a tipping point, but it is merely a symptom of change, not the root cause.