Companies should not be afraid of true open-source licenses
I believe often companies or rather decision makers are afraid of going fully open-source because they invested a lot of money into the product and are afraid some other company uses it, offers it cheaper and ultimately harms the originator.
So even they might believe in open-source they put protections in place that ultimately lock it down and thus make it closed source but trying to keep the impression of being open.
In our journey at AirGradient towards becoming fully open-source hardware (all code and hardware licensed under CC-BY-SA), we had the same concerns but ultimately decided to go full-in and open up everything with an officially approved open-source license.
I believe there are a few important aspects and "protections" that are open-source compatible that help companies protect their investments.
Firstly, requiring Attribution is compatible with open-source and can help companies get a lot of visibility and competitors probably don't want to attribute another company and thus are often not likely to clone.
Secondly, using a share-alike license also makes it unattractive for many other companies using the code.
Lastly, I believe the code itself is often not the valuable part compared to the brand value, employees, reputation, business model, network and implicit knowledge that a company builds up.
It really worked for us to go that way with a true open-source license and I hope many others will do it too.
There are already some easy to understand licenses like CC in place and I do hope that they also create awareness around "open washing".