[bluesnowmonkey]

People don't just move between teams, they also move between companies, even moreso in my experience.

There's this mindset in some companies that they're IBM, they are the world, but the it's not like that anymore. You can't expect people to sit through your company training on how to use your proprietary tools and then spend 30 years working there. You want to be able to use all types of people coming in with all types of experience because it's very diverse out there. And they want to use and build skills that they can take to their next company or leverage to start their own company. You want highly motivated individuals with entrepreneurial mindsets right? What kind of environment will attract them?

Go ahead and say, "We only use COBOL here," and see how that works out. Great everything is interoperable. But you've got a team of C players. Maybe that's fine though.