Actually, the biggest thing in Chrome's favor was being an installer pack-in. People still get sometimes Chrome installed on them if they go download Adobe Reader without unchecking the box. (McAfee Security Scan Plus is Adobe's other paid pack-in, you might see that instead, depending on your location.) People seem to vastly forget that a large part of Chrome's dominance of the ordinary user is the fact that installing half a dozen plugins or tools on Windows has or still installs Chrome and sets it as your default browser.

When doing PC support for layusers, I've found that: Most people don't know what Chrome is, and don't know the difference between it, Edge, IE, and the malicious Chromium fork they have installed on their PCs. (Side note: May the soulless individuals behind the "WebDiscover Browser" suffer a life of misery and despair as punishment for their crimes.) They end up with Chrome (or a malicious fork thereof) due to a bundle installer.