Are New Media Companies the Only Ones who "Get It?"

The word on the street today is that Niall Kennedy is leaving Microsoft, not long after Robert Scoble left. This is yet another in "A" list or high-profile bloggers leaving their company's to do either start their own business or leave for a new-media company. Kevin O'Keefe asks the obvious question "Can large corps retain the visionaries?" I say no. Here is my short list why:

1. Let's face it, old school companies, ones who are older than the Internet, don't "get it" (bold statement, but more true than false)
2. New media companies like Feedburner, LexBlog, Google, and even Userland have started because those who founded them believed in changing the Internet via the Internet. Old media still believes in traditional ways that are proven. They are less likely to take, or set aside monies for risk that will not make a profit for shareholders. Which leads me to no. 3...
3. Funding is different. Either it is via bootstrapping or VC funding, new media is exactly that...new and thus has to find funding in new ways. Old media have shareholders to answer to and thus cannot or are willing to take chances on new technologies

So can companies keep visionaries...I say it is no because those companies who have visionaries are either too political, have to answer to shareholders, or are too slow to adopt to changing times that the visioinaries get bored and need to feed the need to make a difference. So I ask you...do you have a visionary you need to worry about leaving? Are you sure?