You're thinking like an engineer (functionality) and not like a businessman (assets).

You've addressed some of the assets well: the tech, product, etc.

Mozilla isn't just paying for that, they are paying for the audience. I.e. the millions of people monthly who search for authentic product information.

Mozilla may be interested in selling them another product , or revising the fakespot product – who knows?

I'm just calling attention to the assets that the business paid for and that they are worth the money paid.