@Tryphon for the record, I've been a dev for 25 years. Ran a pure-play #FOSS company (all GPL) company for 14 years. Sold it to a bigger FOSS company in 2012. Everything I've done is #FOSS. I've just move my family (wife, 2 boys + dog) into the new house whose building FOSS funded. Proprietary is neither necessary nor desireable to make a good living.
@Tryphon to clarify - we highlighted to our customers that, by us producing #FOSS for them, they were not in any way "locked in". We wanted them to work with us because they wanted to... not because they felt they had no choice due to our proprietary "leverage". Most had previously had bad experiences with that and could immediately relate. A couple had even suffered MSFT audits and had developed a deep disdain for their model (but felt no choice but to keep using MSFT products. Ugh).