Instead of always commenting to resolve the ambiguity around the 'Free' in FOSS I feel we should instead use a different term. Say 'Modifiable'/'Liberal' Open Source Software ?
"Libre /ˈliːbrə/ is a loan word in English[citation needed], borrowed from French and Spanish, used to describe something as being "free", in the sense of "having freedom" or "liberty". It is used in English to distinguish the two meanings of free: free as in freedom (libre) from free as in free of charge (gratis). Another sample is common: Free as "Free Speech", not as "Free Drink"!" - https://en.wikipedia.org/wiki/Libre_(word)
But then the acronym will be 'LOSS' ..... enterprise managers would think twice before considering it ;).
Open Source Software (OSS) is not the same as Free Software (FS). And even with Free Software, the free doesn't mean necessarily Gratis. There is something called Free Open Source Software (FOSS), but even there the Free doesn't need to mean Gratis. Either way, I don't think there is something wrong with having a paid service, while still having your code being OSS. It means that you can access the code, and use the product for free, but you might want to pay for the services the company might offer on top of it. Not that I know if that's the case here, but you know, it's possible.
Any combination of these 3 principles is possible with the right license