Rob9 the playing numbers were already good. After 20 years of professionalism and organised work on it I would expect Canada, Romania, Georgia, U.S.A. to be at the level of Scotland or Italy and to be not only beating them regularly but also joining the tier one competitions.
That they have not done so is a colossal failure of 'World Rugby'.
It took a while for the effects of professionalism to kick in or the Euro clubs to be even aware of the extent of talent available. That I feel explains the points differential.
Georgia has been a country with a very good rugby presence for a long time. It is nothing new. 43 points against a B team is not an achievement and they have advanced precisely nowhere.
There hasn't been any big change in the number of minnows joining the Euro clubs. That came with the growth of professionalism and doesn't signify an change in their number and quality.