Do you mean "purpose built rugby stadiums"?
I don't think the distinction is as clear in France.
The stadium in Marseille, for example, isn't owned by the football club but by the city, and it has frequently been used for rugby too. It was, of course, originally built for cycling, as the name suggests.
Stade de France may have been built in response to France being awarded the WC, but it was always planned for athletics and rugby to take place there too.
I don't know about all the stadia in the rugby WC, but I expect others are communal stadiums, rather than club owned.