I've given money to Canoncial for Ubuntu.

Also, RedHat stopped providing detail changelogs and started doing just one bug diff dump after Oracle started hurting their business -- where Oracle's work at the time was basically repackaging RedHat's work and doing "sed s/RedHat Enterprise Linux/Oracle Unbreakable Linux". RedHat did what it felt needed to fend that off.

Up until that time, they were publishing their internal repositories.