Anthropic structured Fable 5 access around conditions — 30-day data retention, US-only hosting — that enterprise partners were not prepared to meet . The result is that Claude Code's expanding partner ecosystem is now gating on legal and compliance review rather than on model capability. Microsoft's withdrawal is the most visible instance, but the pattern it establishes is the more consequential one: Anthropic has introduced a tier of access that self-selects for compliance-ready organizations, which in practice means smaller and faster-moving deployers are locked out first.
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