More often than not, I have troubles understanding Sam's short, insinuating, future-telling posts about OSS ecologies. My take is that Dave shouldn't worry too much about opening up Frontier: its main USP is that it is a proprietary product, which creates a following of loyal users willing to make the most of their precious dollars - even form a community to that effect. About the same as what will happen to Movable Type 3, for which I'm not going to order an upgrade (just because I'm too lazy to figure out whether I actually need one - I hate complicated license schemes, and complicated really means that I need to count users/blogs and so). Frustrated, I was hoping to find out how we are/should be doing in this list, but alas it was again a list for large enterprises and not for small shops such as ours. Oh well - at the very least you now all know about my bedtime reading. ;-)
I think Sam's post was a compliment. IBM dropped Go, as I recall, and moved to httpd, afaik. It has been a long time since I have run Domino though, so am not sure what is in their stack at the moment.