I agree, but in this particular case i have to ask... how many companies are actually USING Krita? My impression is that the vast majority of places that need software like that use Adobe Photoshop/Illustrator, or Affinity Photo/Designer.
Not only that they use privative products - it's that people think about Krita as an alternative to Photoshop, as Krita is intended for digital painting rather than general raster image manipulation. Hence narrowing the target of Krita to a much smaller audience.
So they mostly only import (Krita-exported) PSD into Ps, or even if Krita was used professionally on the floor by employed artists, choice of tools would be up to artist's discretion and might not become a corporate talking point in the way, say, what Maya or Lightwave debate would be.
Maybe OnlyFans/Patreon could throw a million or two for couple years...? But Krita is not the first choice across the board, and creators on those platform don't seem too concerned with CSP/Procreate subscriptions, so that might be a difficult path too?
Assuming a product that advertises its lack of corporate support won’t be super welcoming of commercial users.