From the interview:
How is Eclipse changing the dynamics of the tooling market?Read Milinkovich on Eclipse 3.1, open source development
Mike Milinkovich: What's happening in the market is that you're seeing the emergence of two tools ecosystems. One is Microsoft's and the other is Eclipse's. Additionally, there are lots of tools that are being built on Eclipse that are not Java. In addition to the Java tools, you can see that Borland's Together [Control] Center is built with Eclipse and, of course, the Rational tools are built on Eclipse. So Eclipse is very strong in modeling. You can also see that Eclipse is very strong in embedded C or C++ development. We're trying to build a tooling platform that a large number of vendors can coalesce around. The advantage to developers is that you get a platform with investment being shared by many companies. That means that lots of cool technology is being based on Eclipse.