Maybe Mark, but there’s nothing to suggest it would have been a blank check type job.
Your first sentence is really my point. Site matters but the architect is at least equal in the final result.
I agree with Jim's comments. The final product at Winged Foot or Oakmont FAR outweighs the quality of the site. As a raw site, there is nothing great about Winged Foot's site. In fact, it had many hurdles to overcome with the heavy soil and rocks. The fact that Tilinghast created two fantastic golf courses speaks to his architectural genius (with several other terrific ones nearby).
Oakmont is one of my very favorite courses. It's land is indistinguishable from countless other pieces of farmland....nice rolling land with heavy clay soil. Yet, what Fownes created is brilliant and unique.
So, getting back to the original question....it's much easier to end up with a great course when you start with a great site. A scenic, sandy site has many inherent advantages over a nondescript heavy soil site. That's what makes courses like Winged Foot and Oakmont so remarkable.