Depends - what counts as "growth of the RPG business as a whole" to you? Does not Mr. Ryan's stated growth of the number of players count?
It depends. Gygax's old book Role-Playing Mastery quotes market research of the time (late 80s) that is about three times that number (IIRC), so taking the long view it underwhelms me. And once again, I wonder at the specific criteria.
Seems to me that what Ryan has said is right in line with what I believe Mr. Cook and others have said. IIRC, in the 1999 data, D&D of some flavor accounted for about 60% of the play going on. Since that time, there have really been only two major game releases - D&D 3.x, and White Wolf's new WoD 2.0.
60% of play is not 60% of marketshare, since gamers can buy more than one RPG. Also, this again depends on how it's measured. Finally, RPGs are rather infamous for being aa hobby where there are lots of people who play but don't buy. One of the questions raised by WotC back in the late 90s was how to get those folks to buy stuff.
Now, if you've nearly doubled the number of gamers, and only one new game has been around to sell to those gamers, who do you think really has the market?
This has nothing to do with who "has" the market, since that's known no matter who's delivering their take on the subject, and obviously wasn't my point, as my specific remarks about Wizards' position should make clear.
I must admit, I stand amazed at people who believe that company representatives will tell them the truth without at least giving it a good spin. It's not their job to do otherwise. Frankly, if Charles Ryan ever said D&D was struggling, he should be reprimanded or fired , *no mattter what the truth is.* It's goes against the basic nature of his job to say anything that could be seen in a negative light and it certainly does no harm.
Don't get me wrong. He's doing his job and besides, I do see it as good news anyway, since you'll recall that I've said I want WotC to succeed (a friend of mine works there, for heaven's sake!), and the very least you can derive from what he posted is that they're in good financial shape.