Marty, I guess what made me think about it is the uniqueness of each course and what makes it 'special'. Why be a member of one particular course over another? There are a lot of factors that can go into that (distance from work/home, cost, quality of course, etc.) but in this case I'm mainly worried about how unique it is inclusively. I think part of what makes Cypress Point special is the unique property it sits on and how there will likely never be anything else like it ever again. On the flip side, does it "cheapen" a course when there are others similar to it or could easily be similar to it - particularly in the area? Like most things in life, the more 'rare' something is the more valuable it is. For example, in the Pacific Northwest there are a lot of courses that "feel" similar since they are cut through heavily forested trees; including current Top 100 courses Sahalee and Eugene CC. However, replicating the design, property, etc. at a place like Fishers Island is a far more rare situation and thus more "valuable."
Most people that visit Wolf Creek in Mesquite have got to be thinking, "I've never played anything like this before!" The closet "copy" to Wolf Creek is probably something on a video game. On the flip side, I've played several parkland courses that feature similarly shaped holes, concepts, etc.
Like was mentioned, terrain has a ton to do with it. Flat courses would be much easier to replicate. I've played courses that "copy" holes from other areas and most of the time their effort falls short. However, a hole like #17 at Sawgrass I think could be copied pretty easily and deliver the same "excitement."