Wikipedia is a non-profit and money goes to servers and wages for a few staff members.

Google gets advertisement money out of it and is a for-profit organisation ...

Actually, the organization behind Wikipedia has way more than "a few" staff members. There's been a perceived problem with excessive spending growth for many years now although to be fair, the increased spending has also allowed for compelling new features, projects, and avenues of editor support. (Stuff like the Visual editor, newer successful projects like Wikivoyage and Wikidata, initiatives to support article-editing in educational and scholarly settings, large-scale contests to support the editing community, etc. etc. just wouln't exist absent that revenue growth.)