"I was surprised, to say the least. I talk with a lot of enterprises in the course of my business, and open source is always a primary reason for why they purchase my company's product, even if they don't intend to view or modify source code. The question I never asked, however, because my company doesn't offer proprietary software, is how the buyers would react to proprietary ("commercial") components.
"From what I heard today, it's a non-issue. Every CTO that spoke up (and it was a very open forum) said that they are happy to pay for proprietary extensions to open-source software, and criticized pure-play open-source vendors for not providing an obvious, compelling reason to pay: proprietary bits. (One actually said that we have built a great financial model...for SIs, not for ourselves.)"