Where does open source code come from?

From this article:
The European Commission has published its final report on the Economic Impact of FLOSS (Free/Libre Open Source Software) on innovation and competitiveness of the EU ICT sector.
Weighing in at 287 pages it will take some time to digest, and contains enough data and statistics to fill a blog for a whole year.
One interesting nugget in the report (which I've not had a chance to fully read yet) was a “top ten business contributors” list, based on number of Person-months. To be honest, I was a bit surprised by the list. Sun was number one, which was no surprise. Rounding out the top three were IBM and Red Hat, also very much expected. The rest of the list:
4 Silicon Graphics
5 SAP
6 MySQL
7 Netscape
8 Ximian
9 Realnetworks
10 AT&T
That's where the surprises came in. Many companies I'd have expected to be there are suspiciously absent. SAP was also a surprise up that high. I'll have to look into what else aside from MaxDB they've donated. Just goes to show that code isn't always coming from the places you think it is. I'd guess I'll be posting more about the report as I get a chance to read it.
(originally from Matt Asay)
–jeremy
Linux, Open Source