completely agree with you. community-funded and maintained, with suddenly -80% of revenue, will likely be very slow-going, but going. I donāt how injured or maimed it would be, but it be much slower at the development level than Chrome. We will see what the future brings.
I really wish some rich moneybags would throw capital behind a 3rd option (like Ladybug, for instance) to challenge the marketā¦from dystopian to utopian here 
Community-funded is all most projects need. The issue is the community thinking that everything should be free without giving any kind of donation.
If Firefoxās users just gave $1 per month, things would be just fine. This is the same for most other projects.
150 million+ users could equal $150 million dollars per month.
Reference: https://data.firefox.com/dashboard/user-activity
And: https://www.investopedia.com/articles/investing/041315/how-mozilla-firefox-and-google-chrome-make-money.asp
In fact, for most other projects, it would be more than they require, and they would probably be a lot better able to compete with or even destroy the current privacy-invasive and money-gurgling industry standards in their respective fields.
Too many people are willing to spend $50+ per month on entertainment-based subscriptions, but arenāt willing to fund the FOSS apps they use daily.
Anyway, this sounds like a rant. Lemme stop here. 
Thanks to your rant, I will look into donating to Mozilla. I want to make sure that I do my part.
Mozilla has been mismanaging Firefox for an eternity. A shrinking userbase, laying off hundreds of workers, yet doubling the CEOās salary for that debacle, Mozilla is a prime example of everything that is wrong with ānot for profitā entities that suck up money for the greed of a few.
You can find better places for your hard-earned money.
I know that a lot of people have issues with Mozilla, but searching things up about why comes up with results for Firefox, not Mozilla itself. Iāll be honest here: it aināt really my problem that people inside the organization canāt handle money. Iām donating because I like the browser they have and I believe that me donating will help out. I do wish Mozilla will get back on their feet, but some of the challenges they face right now canāt really be solved, like the shrinking userbase. Also, remember that if Firefox didnāt exist, these forks wouldnāt have existed either.
I hear you, my perspective is that Mozilla get over half a billion dollars a year, from Google. You do you, but there are other projects that are in far more need.
I agree with both your point and with @winnyaceās point.
Donating to Mozilla is kind of similar to donating to Ubuntu or Red Hat. They donāt need it right now.
But if you use something that is entirely based on one of those projects, especially if all the users of such a project donate to it, then they would have all they need.
In the case of Mozilla, they could say ānoā to any of Googleās terms.
In my WIP thread, I briefly mention how important it is to fund the development of the FOSS apps we use. I havenāt updated the online thread in a while, but I have been adding to it, including this:
This adds up to a minimum total of: $14+ USD monthly / $168+ USD yearly
There are others that I would like to fund, but cannot, either because there is no donation link provided by the devs or the payment method is not something I can use (like crypto), or Iām not willing to use (like adding my card info to yet another site).
There is no need for much more than $12 per year for most apps/services you use. If everyone else donates, $12 is more than enough. Do your part by informing others. No need to strain your pockets. You alone canāt make all the difference, unless youāre filthy rich.
A quick example:
Krita very likely has well over 100,000 users. However, they only receive about $3,000 USD in donations monthly, YET, look at how much they are doing with only $3,000 USD.
Now, imagine that all the users were doing their part and what it would mean for the industry Krita is part of, including the devs who work on it.
Reference: https://fund.krita.org/
And: https://krita-artists.org/t/krita-usage-statistics/29184
So, think of the apps you use regularly, including your distro(s), and think of how much you can budget for them either monthly (recommended) or yearly. You can fund specific apps/services/distros (Krita, Mastodon, Archcraft, etc.) or entire software ecosystems (KDE, ActivityPub, The Open Source Initiative, etc.).