As far as I understand that is the opposite of how it works. The linux foundation was set up to receive funds from big business contributors - like Intel, Microsoft etc, who have an interest in the continuation of the linux kernel and wish to pay for jobs which didn't have a source of funding (i.e. Linus's job and other maintainer) and who wished to remain non-partisan. So these companies provide both code and money. That money isn't meant to be kicked back to profit-making companies as far as I understand.