Those are not very good examples. Xen was very heavily and skillfully marketed by its corporate sponsor, XenSource, and after that by various companies with a financial stake in the project.
OpenVZ was the flagship technology of Virtuozzo, and is now at the heart of Parallel's commercial offering.
KVM was the heart of Qumranet's offering, which was then acquired by Red Hat.
So all three of these examples are factually wrong: all three technologies were heavily marketed, both externally (getting customers to use it) and internally (getting other businesses to support it, contribute to it, and lobbying to get it merged upstream). Arguably none of these projects would be so widely adopted without the marketing efforts of their corporate sponsors.
Better examples might be vserver or qemu, who are not directly linked to corporate sponsors (that I know of).
Comments
Those are not very good examples. Xen was very heavily and skillfully marketed by its corporate sponsor, XenSource, and after that by various companies with a financial stake in the project.
OpenVZ was the flagship technology of Virtuozzo, and is now at the heart of Parallel's commercial offering.
KVM was the heart of Qumranet's offering, which was then acquired by Red Hat.
So all three of these examples are factually wrong: all three technologies were heavily marketed, both externally (getting customers to use it) and internally (getting other businesses to support it, contribute to it, and lobbying to get it merged upstream). Arguably none of these projects would be so widely adopted without the marketing efforts of their corporate sponsors.
Better examples might be vserver or qemu, who are not directly linked to corporate sponsors (that I know of).