Corporate software in general is often chosen based on the value returned simply being "good enough" most of the time, because the actual product being purchased is good controls for security, compliance, etc.

A corporate purchaser is buying hundreds to thousands of Claude seats and doesn't care very much about percieved fluctuations in the model performance from release to release, they're invested in ties into their SSO and SIEM and every other internal system and have trained their employees and there's substantial cost to switching even in a rapidly moving industry.

Consumer end-users are much less loyal, by comparison.