No, it has about 60% on both mobile and desktop, not counting the derivatives (like Edge and Opera). Considering that both of those markets grew significantly since IE6 days, that makes Chrome more dominant than IE ever was.
And you seem to assume that an average consumer installs stuff on his own after the OS installation, which is not the case with less tech-savvy people I know. They usually give it to someone a bit more tech-savvy to do post-install tasks, and those always include an installation of a different browser. Every single second-hand computer available in my country's market comes with a cracked version of Windows, MS Office and a different browser. Tech-savvy ones just reinstall the OS, non-tech-savvy ones continue using the defaults — the defaults set up by someone else.