Let's say Firefox is the most advanced browser of the universe. How can you get people to install Firefox?
Chrome has the advantage here because it is preinstalled in every Android phone and Android has more than 90% market share.
The second advantage Chrome has is that it cannot be uninstalled from Android. The fact that Android phones have a limited storage space is a compelling reason to not install a second browser.
The third advantage Chrome has is the fact that more than 90% of people use Google has search engine and every time you access google.com with a browser other than Chrome you get a "Switch to Chrome" notification telling you that Chrome will help you "hide" annoying ads (without telling you that Google is responsible for the annoying ads) and you will be safe against malware. The regular user fears malwares and viruses more than ads or anything else because they think their bank account info will be stolen, so better security is a compelling reason to install Chrome.
Please, tell me, how do Firefox or any other browser can compete with the fact that Google is abusing their dominance of the search engine market and the mobile phone market to "force" people to use Chrome?