It does not have to be the majority. It would suffice to produce enough funds to continue developing Firefox, with full-time engineers, infrastructure, etc.
The whole Mozilla foundation budget oscillated around $100-120M/y for last few years. Let's assume that half of it was dedicated to Firefox; e.g. $60M/y. It would take 500k users paying $120/y (aka $10/mo) to support their favorite browser. The current audience of Firefox is approx. 170M users; it would take about 0.3 percent of the audience to be paying users; 0.6% if you lower the rate to $5/mo.
This is how any freemium works.
Even more funnily, someone with a good reputation could just start an organization to accept the payments and direct them to Mozilla developers, both Mozilla employees and significant open-source contributors. Eventually the developers might stop needing the paycheck from Mozilla, and thus from Google.
If we adjust to these numbers, we need to quadruple the number of paying users, up to some 1.2% of the total user base. Let's add a safety margin, and bump it to 2%.
> someone with a good reputation could just start an organization to accept the payments and direct them to Mozilla developers, both Mozilla employees and significant open-source contributors
I had the same thought. I dont think such an org would be able to pull in nearly the same amount of money as Mozilla does, but even a few million dollars a year would fund a lot of development work.
The whole Mozilla foundation budget oscillated around $100-120M/y for last few years. Let's assume that half of it was dedicated to Firefox; e.g. $60M/y. It would take 500k users paying $120/y (aka $10/mo) to support their favorite browser. The current audience of Firefox is approx. 170M users; it would take about 0.3 percent of the audience to be paying users; 0.6% if you lower the rate to $5/mo.
This is how any freemium works.
Even more funnily, someone with a good reputation could just start an organization to accept the payments and direct them to Mozilla developers, both Mozilla employees and significant open-source contributors. Eventually the developers might stop needing the paycheck from Mozilla, and thus from Google.