Can you read?
> Pet care is less regulated than child care, but it too is subject to the Baumol effect. So how do price trends compare?
It's obviously a comparison between a highly regulated and less regulated market to try to identify the cost driver.
And it necessarily conflates them so that the comparison is meaningful. Otherwise why not compare it to, say, gardening?
Because gardening isn't a decent analogy for less regulated childcare.