You'd have to look at their profit numbers. They have a huge captive base of customers, like Adobe it might take decades for things to get bad enough and alternatives to arise before their profitability is impacted. And the executives who benefit will have cashed out long before then.

Recently saw an example of somebody who vibe coded a tool to mass export the contents of a 'Confluence' wiki into an instance of self hosted mediawiki, preserving everything.

Mediawiki as a whole has a feature set that 95% of organizations will only scratch the surface of. There's a ridiculous number of possible plugins and customization if you have somebody who knows what they're doing with it.

The majority of companies that need an internal KB/wiki do not have as complex needs or use cases as wikipedia itself or the wikimedia foundation.