The explosion of interest in virtualization was started by VMware, a commercial entity, which rather makes Pike's point. Xen was started in response to the lack of an academia-friendly platform for virtualization research; "paravirtualization" was not initially a design goal, but rather an expedient choice to avoid the difficulties of correctly virtualizing the x86.
And while I'm biased, VMware's solution to this problem (dynamic binary translation from supervisor x86 to user-level x86) is massively more inventive, interesting and useful than Xen's solution (hack up the kernel). I emphasize "useful", because a lot of VMware's customers were most interested in running Windows, which was not paravirtulization-ready until 2008, a full ten years after VMware's products were available.
VMware's awesome... but its roots are also in academia, the company was started by a Stanford professor and his PhD students.
It seems like a circular argument if the criteria of an academic project "successfully influencing industry" is widespread adoption but that adoption cannot be facilitated by a commercial entity.
[As a side note -- the impetus for Xen, and also somewhat for VMware, was in a vision of global appliance-based computing, not in "virtualization research." I think that is really interesting given what just happened in this area in the last 3 or 4 years.]
The explosion of interest in virtualization was started by VMware, a commercial entity, which rather makes Pike's point. Xen was started in response to the lack of an academia-friendly platform for virtualization research; "paravirtualization" was not initially a design goal, but rather an expedient choice to avoid the difficulties of correctly virtualizing the x86.
And while I'm biased, VMware's solution to this problem (dynamic binary translation from supervisor x86 to user-level x86) is massively more inventive, interesting and useful than Xen's solution (hack up the kernel). I emphasize "useful", because a lot of VMware's customers were most interested in running Windows, which was not paravirtulization-ready until 2008, a full ten years after VMware's products were available.