Pat, as unfortunate as it is that this bug is wiping out an entire species of trees, for golf courses, I do not worry too much. Ash trees were a favored species due to their fairly rapid growth rate. This led to it being a good replacement for the American Elms along with other fast growth rate trees (see Terry Lavin's list of hated golf course trees).
The loss of the trees may help allowing more light into roughs and some greens, therefore allowing for better turf. It is fairly evident to see the effects of overplanting on area courses. When one Elm died, the area of impact was about 60' in diameter. Often serveral (3-4) trees were used as replacements to fill the void. Of course, that was to solve the immediate problem with no thought given to what would happen when all those trees matured in 30-40 years. And since no one could bring themselves to cutting down a perfetly good tree after 10-15 years, these trees began to grow into the same airspace. The result is now trees that have a bad side or two. If an Ash tree happens to nieghbor another species of tree and itnow dies, you may be looking at a remaining 3-sided tree. So, you may see either many ugly trees or the cutting of non-Ash trees as a result.
In the end, who knows, maybe courses will replant with some of the Dutch Elm resistant cultivars that have been found and cross -bred iover the past 30 years and the cycle will have come full circle.