Many people who like Macs will continue to buy Macs even if OS X was freely available on other PCs, and OS X would continue to indirectly generate revenue for Apple even after it were open-sourced:<p>For one, many more people will have access to the Mac App Store and the iBook Store, leading to increased sales for apps like Final Cut and Logic. There&#x27;ll be many more potential customers for their iCloud Drive storage plans. Last but not least, it will drastically lower barriers for iOS&#x2F;tvOS&#x2F;watchOS development as people will be able to develop on any PC they want, not to mention it would increase the pool of people making native Mac apps as well.<p>Apple can still differentiate Macs through their hardware, things like their pressure-sensitive trackpads, form factor and by keeping bundled apps (like Photos and stuff) closed-source and exclusive to Macs.