My intuition is that it’s probably in about the same range as the broadcast networks, but I have no numbers to back that up.

I don’t think it can be significantly higher or lower: if the cancellation rate were significantly lower, “streaming services always cancel after 1 season” wouldn’t have caught on as a perception, and if it were significantly higher, it wouldn’t be as easy to find multi-season streaming shows as it currently is. But is it slightly higher or lower? I have no idea.