Are you saying that Wikipedia doesn't need to innovate and just leave their organization as it is? I follow Wikipedia since its inception and it seems part of its processes, as in major organizations, amplifies bureaucracy more than process innovation. Any organization is not only their throughput but their processes, including resources as humans.
I'm sure there's any number of things they can do better, but revisiting their entire premise isn't just a suggestion, it's a request that they become a completely different thing.
Wikipedia is probably the single most successful human knowledge project of the last 100 years. It sounds crazy saying that out loud! Maybe it's not true! But that it's even a colorable argument speaks to how little software engineers have to contribute to its fundamental direction. It's not about us.
I agree with you with the importance of Wikipedia but it should be noted the acceleration of technology (not talking about singularity!) that will impact them. It is the acceleration of the means in the relationship of humans with technology. This is a fact.
The innovation dilemma is always present, even for NGOs.