I've never been a Solaris junkie, but this quote sums up my limited experience with Sun as well:

For years corporate buyers bought from Sun in part because it seemed to know where tech was heading. Now, many believe Sun spent several crucial years with its head in the sand. 'They've always had lots of great things on paper. But when it comes to execution, they're lacking,' says Gary Feierstein, vice-president for information technology at Premier Inc., a San Diego company that manages 1,500 hospitals.