Just create a dummy-non-profit-company which operates under command of the profit-company. Buy WMF and sellout relevant parts to the profit-company or transform WMF into a profit-orientated organization for the sake of surviving.

The could sell ads, but also edit-permission to articles or cleaning of content, usage of licensed content, user-data, or a gazillion other things which are for the average user harmless in the beginning. Heck, I could see stupid influencers paying $100 for getting their own wikipedia-entry.