Abnormal.ai responded to an Anthropic lawsuit this week as Microsoft simultaneously moved to replace Anthropic's models with proprietary AI in select applications, signaling shifting vendor preferences in the market. The US cyber agency is actively using Anthropic's models for government code auditing, demonstrating enterprise adoption in critical infrastructure. For healthcare AI vendors and health systems evaluating foundation models for clinical workflows and compliance work, this consolidation suggests the vendor landscape is narrowing around first-party solutions and proprietary alternatives. These developments carry implications for EHR integrations, audit capabilities, and long-term partnerships that healthcare organizations should monitor when locking in AI infrastructure contracts.