Here's a good assessment from Joanna Bogle at the Catholic Herald. Good, but in my opinion a bit more rosy than is warranted. And I'd say the headline is definitely too rosy:
It hasn’t been easy. But ten years on, the ordinariate is a success story.
I won't say the text contradicts that, but it certainly qualifies it. (And most likely the author did not write it.) Joanna Bogle is British and is writing mainly of the UK. Here she describes the phenomenon that apparently surprised a lot of people who thought that the development would be enthusiastically welcomed and that significant numbers of Anglicans would "come over":
A meeting of Forward in Faith, a network of orthodox Anglicans and the leading organisation on the scene, was quickly summoned. And that was when disappointment set in. The reaction of many was not what had been expected.
“We couldn’t believe it,” the ordinariate member recalls. “Speaker after speaker rose to say, ‘Oh, I don’t know … I don’t think this is for me,’ or words to that effect. Where some of us had assumed a general rejoicing and some practical plans on how to go ahead, there was just a flatness, a sort of bland rejection without any real reasons given.”
More or less the same kind of thing happened here. I was not altogether surprised, as I thought the number of interested Episcopalians and "Continuing Anglicans" was relatively small. It's not as if the heterodox drift (to put it mildly) of the Episcopal Church was a new thing. It was obvious and obviously well under way when I converted in 1981. Most people who were truly unhappy with those developments left years ago. As someone I know put it, "that pond is fished out."
And some big proportion of the Continuing folks seem to be very definitely Protestant. Or, if they think of themselves as Anglo-Catholic, are pretty well committed to the idea that they don't need to be in communion with Rome because they're already Catholic. Scratch these folks, and you'll usually get a distinct whiff of old-fashioned British disdain for "the Roman church." I suspect something of that is behind the "bland rejection without any real reasons" which Bogle describes.
(Here I will air one of my numerous pet peeves: the Anglicans who deny that there are any significant theological differences between them and Rome, yet when asked "So why not accept Rome's teaching?" immediately name a number of theological differences that they cannot accept. Either they're significant, or they're not.)
I don't follow these things very closely, but I'm told by those who do that the U.S. Ordinariate is doing better. Our local group, the Society of St. Gregory the Great, is hanging in there, not growing much but not in immediate danger of death, either. And the Ordinariate's cathedral, Our Lady of Walsingham in Houston, seems to be thriving. I was there a month or so ago and it was a pretty impressive experience. I had meant to do a blog post about it but haven't gotten around to it. There's more to the Walsingham story than Anglicanorum Coetibus, though: it came into being under John Paul II's Pastoral Provision in the early '80s, so it has relatively old and deep roots now.
As I see it, AC was about thirty years late. It is what the Pastoral Provision should have been; the PP was far more limited in scope than the Ordinariates. (See this for what the PP effected.) I think more Anglicans in this country would have come over if something like the Ordinariate had existed then. I almost said "too late," but that implies a hopeless situation. In this case "never too late" and "better late than never" apply. I think of us as nurturing a small and slow-growing plant which may grow into a great tree long after I'm gone. Maybe it will, maybe it won't, but it certainly won't if we don't keep it alive now.
Thank you and God bless you, Benedict XVI.