I wonder why they allow it at all.

Like its a no brainer to force your employees to use your own models, then RL train them to be better.

Only if all you care about is developing models. I assume the rest of the business would rather just use whatever's best in class regardless of who made it, so I'm sure it's not that straightforward of a decision.

Or let them use Claude, track everything, and use that data to train your own models.

If you assume that noisy general usage data enables good RL, particularly compared to curated RL training sets.

I am not convinced that's the case.