Chrome’s market share lets Google decide what the open web becomes, and Manifest V3 already neutered ad-blocking inside Chromium. Firefox is one of the last browsers running its own engine and still respects uBlock Origin.
A handful of sites built lazily for Chromium will misbehave. Casting to Chromecast is rougher. Some enterprise SSO tools assume Chrome. Sync is fine but doesn’t match Chrome’s deep Google integration.
Firefox is free. Chrome is free. The hidden cost of Chrome is the cumulative effect of one company controlling the web’s rendering monoculture.
Anyone who cares that ad-blockers keep working, or who uses container tabs for client work. If you’re locked into a Chromium-only enterprise tool, run Firefox alongside as your daily driver.