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Automattic demanded a cut of WP Engine’s revenue before starting WordPress battle.
(www.theverge.com)
This is a most excellent place for technology news and articles.
I believe that the money 'demanded' was for the for-profit organization Automattic. Wordpress (i.e. Matt) then tries to make it all about the Foundation. This seems to be false and a ruse to make it seem like a non-profit is fighting a company.
This is a dispute between WPEngine and Automattic.