I'm sure you weren't implying me in particular, but to clarify, I certainly don't think open source is the solution to everything.

I just find it particularly important in the field of emulation. This is much like a science, with constant refinements to theories. Since we're running against the clock to preserve these systems before they die, I assign much more value to open source emulators than I do to other applications (for instance, I'm happy to use the closed source nVidia driver on Linux.)