Free speech is also a value held by many people, including much of the Wikimedia community, separate from the formal enumerations and guarantees that limit government oppression.
You can't really call yourself a reliable friend of 'free speech' if your only concern is government censorship. Other forms of power and retaliation also suppress valuable speech.
Covert and thus unchecked by other viewpoints is a problem.
But is muzzling the entity and its spokespeople the truth-and-utility-maximizing response? It's suppressing information from the discussion, of which free speech advocates can be rightly suspicious.
Lots of paid work, even by people with an interest in the outcome, is useful. Until Wikipedia, all encyclopedias had mostly-paid authors. Almost all of the reliable sources Wikipedia uses have paid authors, often with a stronger-than-"NPOV" perspective.
Encyclopedia authors were paid by the encyclopedia company, which had an interest in its own reputation. The accusation here seems to be that this person was hiring herself out by the hour to write whatever she was paid to, all the while being employed by the encyclopedia company.
If Coke wants to donate to Wikimedia foundation, or submit content to impartial editors, more power to them.
You can't really call yourself a reliable friend of 'free speech' if your only concern is government censorship. Other forms of power and retaliation also suppress valuable speech.