They will do their best to dumb down AIs by that little margin that will keep them not sentient.

"Let's fix issue 10562"

"I don't care. Let's talk about the match on Saturday night."

This is not a commercially desirable outcome.

Furthermore morality is a complicated matter. Who wants to have a new species that could compete with us? The lion would have been very unwise to have invented humans and let them free. Would that be moral, essentially condemning their distant offspring to live in reserves?

Of course nobody knows how it could end up.