> Back in the resurgence of the Mac after Steve Jobs returned, the policy was to make everything as open as possible
My perception is quite different. One of the first things Steve did after his return was to revoke the licenses for Mac clones (Power Computing, Daystar, UMAX, etc). Also, the iPod, iPhone and iPad were created under his leadership and have always been very far from open in their designs, regarding both hardware and software.
Apple was (and still is) very open when it helps them, e.g. by adopting and enforcing USB (original iMac) or USB C (laptops from ca 2015 on).
My perception is quite different. One of the first things Steve did after his return was to revoke the licenses for Mac clones (Power Computing, Daystar, UMAX, etc). Also, the iPod, iPhone and iPad were created under his leadership and have always been very far from open in their designs, regarding both hardware and software.
Apple was (and still is) very open when it helps them, e.g. by adopting and enforcing USB (original iMac) or USB C (laptops from ca 2015 on).