I think MongoDB and Elasticsearch should be examples of the opposite if anything. They tried to do the whole FOSS thing, but now both use "Server Side Public License", which is generally regarded as source-available, but not open source because of its restrictions.
They pay their employees well, though- the parent I replied to was implying one could not be paid well while writing software which is given away "for free". This is clearly not the case.
https://opensource.org/node/1099