Microsoft doesn't want to make the same mistake IBM did.<p>IBM enjoyed 70% market share in the enterprise for 30 years. They thought it would last forever. Until the PC came along. But they didn't take it seriously and look what happened.<p>Microsoft knows as well as anyone that the days of thick clients and proprietary software are numbered. So they'll milk that cow as long as they can.<p>No one knows for sure what's going to happen, but with thick pipes, thin clients, open source software, and the upheaval of the "enterprise", I'd be planting new seeds, too.