We want many things. I use mozilla because I can verify it is free of the tracking that may be in Google Chrome and definitely in Microsoft Edge! This is because it is open source. I was loyal to google for many years, but I use Open Source these days and I would never go back. Firefox is a lot safer due to the fact it can be patched as soon as a vulnerability gets found, while google tells you it does that it is usually a fortnight after Firefox!