IBM does very well know the existents of Wine (they even acknowledged that by themselves lately), but may very well not support it, because of inter-relation with MS. As of now (just a guess), they don't want to get into more hot water right now....
Would it be to the advantage of Microsoft to have Wine succeed? They have given Apple much support and at every class for the past several years the instructors have had a copy of Linux on every machine. A very good case can be made for Microsoft supporting Wine especially since the RH secure kernel came via NSA and may very well become a DOD standard. Perhaps Wine should formally contact Microsoft.