[robbie-c]

There's proof of financial dependence, here's a recent report https://assets.mozilla.net/annualreport/2021/mozilla-fdn-202...

In 2021 they got $500M "royalties" (this is their payment from Google) with only $75k revenue from all other sources, including $7.5k donations.

[OvervCW]

The document you linked mentions $50M in advertising/subscription revenue.