The “Country Club Blue Bloods” you speak of have been the base of the party for over a century. Many members of the current socially conservative “base” have only been with the party for a few decades. So it’s hard to say that the former group of stealing the party.
Still, the old base (the pro-business middle class) would be wise not to lose sight of the moral values society must hold for capitalism to succeed. Just as the party would be wise not to lose sight of the fiscal values the old base values (or we’ll have another election like 2006).
It’s true that the country club Republicans have been around longer than the social conservatives. But that’s because no one until the 1960s was trying to use federal power to force abortion, the homosexual agenda, militant secularism, leftist public school indoctrination, and other such things on the populace. The rise in the religious right was in response to that threat. When that threat arose, the Democrats endorsed it, seeing it as a way to amass federal power and push America left by creating a culturally Marxist society. The country club Republicans yawned and looked the other way because all they cared about was taxes and spending. If it hadn’t been for the religious right, we’d be much further to the left than we are today.