There is some nuance required here, since ‘corporation’ is such a vague term. Even Mozilla Corporation, which is wholly owned by the not-for-profit Mozilla Foundation, is a for-profit organisation (i.e. it aims to turn a profit and is taxed) which which reinvests its profit back into Mozilla’s projects and and other work which Mozilla considers to be in the public interest for a free and open Internet.

Everyone has to question the stated goals and desires of corporations, and ask things like e.g who is the corporation accountable to (shareholders? themselves?) and how open is the corporation about how it invests its profit. Attempting to turn a profit is in itself not necessarily an indication that everything they do is in the sole pursuit of profit for itself.