The alternatives have to exist first before the monopoly can break. One doesn't have to think the browser will singlehandedly change the entire browser space to be hyped about more alternatives. I am just excited to see some amount of motion in opposition to the decline into the google-net. Not that this is the only thing happening but it is an interesting one that I hope pans out.
The biggest part is that Chromium has all but taken over the browser space, and Google is additionally 90% or so of Firefox's funding which likely gives them power even when it's unspoken. That is to say that Google has way too much control over browsers to go along with their way too much control over internet traffic in general. The recent Manifest V3 thing and Mozillas "privacy preserving" ad personalization also likely have significant effects.
The software is free. The trademarks are not. The four freedoms are about the software and not about trademarks. You could fork Rust and call it Corrosion, just like people have forked Firefox and called it Waterfox.
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