He could have been talking about most software dev shops:

"There is nothing more difficult...than the introduction of a new
order of things. Because the innovator has for enemies all those who
have done well under the old conditions, and lukewarm defenders in
those who may do well under the new. This coolness rises...partly
from the incredulity of men, who do not readily believe in new things
until they have had long experience with them."

--Machiavelli

While trying to install Visual Studio 2010 after having uninstalled Visual Studio 2010 Release Candidate on my machine I got the following error. The solution was simple, though--after uninstalling RC just delete the old Visual Studio 10 (and 9 and 8, if appropriate) folders and restart installation.

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Microsoft Visual Studio 2010 Ultimate Setup

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Error 1935.An error occurred during the installation of assembly 'Microsoft.VisualStudio.Platform.WindowManagement.resources,version="10.0.0.0",publicKeyToken="b03f5f7f11d50a3a",processorArchitecture="MSIL",fileVersion="10.0.30319.1",culture="en"'. Please refer to Help and Support for more information. HRESULT: 0x80070005.

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