Astute observation by John Gruber:
For many people on MacOS, the decision between Safari and Chrome probably comes down which ecosystem you’re more invested in — iCloud or Google — for things like tab, bookmark, and history syncing. Me, personally, I’d feel lost without the ability to send tabs between my Macs and iPhone via Continuity.
In short, Safari closely reflects Apple’s institutional priorities (privacy, energy efficiency, the niceness of the native UI, support for MacOS and iCloud technologies) and Chrome closely reflects Google’s priorities (speed, convenience, a web-centric rather than native-app-centric concept of desktop computing, integration with Google web properties). Safari is Apple’s browser for Apple devices. Chrome is Google’s browser for all devices.