I’d happily pay $100 a year for Firefox WITH an adblocker as long as part of the money is put towards ongoing internet freedom and preventing attestation
Actual attempts to get users to pay for the browser itself, like what Opera did, simply didn't work and led to the insolvency of the browser and having to sell it off to someone harvesting its users as data.
Unless, of course, you're holding out for, I don't know, a BeOS version.