Built on open source... an important part of which they invested in (LLVM). One can as well easily install LLVM/clang via MacPorts, or wait until Lion (under th

Built on open source... an important part of which they invested in (LLVM). One can as well easily install LLVM/clang via MacPorts, or wait until Lion (under the assumption that XCode will still be included on the download media). Getting the proprietary parts for five dollars is certainly not a bad deal. But one has to wonder... why? Is it to cover download costs?