I've been trying to ignore this nagging pain, but it just won't go away. The Open Source Geospatial Foundation will not assert technical superiority of open source software, and worse, makes statements like this in its FAQ:
The foundation respects the important role that proprietary software plays in our industry, and is not trying to get rid of it, or the companies that produce it.
Better to be like the ASF and simply make no statement at all about proprietary software. The one above is an embarrassment.
However, the foundation takes the position that free and open source software can and should play an important role in the geospatial industry. Furthermore, having quality open source alternatives to proprietary software can be good for the end user, the industry, and even the proprietary software vendors. In fact, most proprietary geospatial software is built on open source software to some extent.
Having alternatives can be good? Of course, but the thing that motivates me -- and I'm not alone, here -- are superior alternatives. The open source and free software movements are winning. We're producing the best web server, the best web browser, the best operating system. GDAL, PostGIS, and MapServer (to name a few) are displacing proprietary software in shops on their technical merits. Come on, OSGeo milquetoasts, stand up for open source. If you need help, I'll loan you my Troy McClure self-help video collection.