Comment From the KDE 1.0b3 Announcement: (Score 2) 141
"Supported platforms: KDE was primarily developed under the GNU/Linux variant of the Unix operating system. However it is known to compile without, or with very few, problems on most Unix variants. At the moment we explicitely support GNU/Linux (Intel , Alpha, Sparc) and Solaris (Sparc) and we have success reports for..."
There are a lot of people here that clearly weren't deeply involved either in serious (non-home) computing or Linux during the era in which Linux was introduced and had its biggest impact.
Lots of "but GNU..." or "but all of these things aren't Linux-only..."
This commentary on KDE is an example. Sure, it eventually supported more platforms. But that doesn't change the fact that as an early OSS project, it was possible—that is to say, the developers that became involved were able to become involved in the first place—only because Linux had become available and broadly accessible.
Without Linux—if people wanting to do GUI development had been limited to DOS/Win3 or Mac OS on the low end, or SunOS/AIX/HPUX/etc. on the high end, in other words—KDE would simply not have happened. First, all of these systems came with their own DE that was vendor-supported and "good enough" while Linux users were stuck with TWM/FVWM or commercial CDE ports, and next, GUI development was either prohibitively complex and specialized or prohibitively expensive on these other platforms.
Saying that the developers at the start used whatever free OS they could find does not change the fact that the free OS that they did, in fact, find was Linux and that's how many of them came into the flow. *BSD had been around for a very long time prior to Linux, yet the Unix world had remained the rarefied and very expensive Unix world with very little of note going on in the middleware level—it was all vendors building systems and departments (academic or enterprise) implementing specific application flows. It was highly vertical and highly proprietary.
Linux enters the scene and in half a decade we have multiple entirely new integrated DEs for Unices, rapidly expanding driver support for almost all commodity hardware, and businesses and schools in every direction running Unix instead of DOS/MacOS. The barriers to entry in computing, information systems, and research design and development of all kinds went from extremely high to almost none, almost overnight—in one cohort of college students, essentially.
Linux opened Unix and networking up and turned them into the global ecosystems that they are today. Saying that this would have been *technically* possible without Linux is not at all good support for the claim that it would have been *likely* at the social (i.e. in actual society) level. Linux changed the game entirely, brought TCP/IP, OSS, and what was once called "high performance computing" (now it's just basic "computing" to raytrace a widget, compress a data stream, or manage multi-gigabyte database) to the public. Before Linux, all of these were exotic and expensive and economies of scale not only didn't apply but in fact couldn't. Now, decades after Linux, they clearly seem very pedestrian to many and economies of scale mean that you can carry them around in your pocket.
It's an eye-opener to read this Slashdot discussion and see so many that don't actually understand or know this.
It makes me think that the time may be ripe for a historical work or historical wiki on Linux/OSS history and its relationship to the broader Internet and information society of the present.