There is quite a lot of 'invented tradition' around all of this. The late and much-lamented Bobby Furber (who was Captain of RSG in 1981, the year the Open came back to Sandwich) told me that during the 1950s people played at RSH in exactly whatsoever format they wanted, including 4-balls, on a course that was never exactly crowded. I am basically an impatient golfer and love 2-ball-preferred clubs like Huntercombe and Brancaster and Woking, and was one of those who some years ago voted against even the (very) modest relaxation of the rules proposed at Huntercombe, which now permit a very small amount of member 4-ball play at weekends, to accommodate the stated wishes of some of the members, especially some of the younger ones. But the world has not ended, and visiting societies at Huntercombe continue to play a great deal of 3-ball competitions, even if foursomes emphatically remains the dominant format for most member golf.