It feels like the people Phil's reacting to ("an industry with rather paranoid clients that contractually bar us from using Open Source software") are bad at co

It feels like the people Phil's reacting to ("an industry with rather paranoid clients that contractually bar us from using Open Source software") are bad at convincing their clients. The solution isn't "learn to use open source because it's generally a better model for collaborating on software" as Phil suggests. It's "learn to educate your clients better, so that they don't contractually obligate you to do silly things".