Back in the 1980s, IBM PCs, which were top of the range using Microsoft OS, were horrible to use. Different programs used different command symbols for the same function, even for quit. They didn't have Windows folders, and the peripherals like printers had to be opened up and switches customised to work. Then, Apple came up with the MacPlus etc and controlled all the software from developers so that they all used the same commands, they had folders (later ripped off by Microsoft to make Windows), the peripherals were all plug and play. Apple put the user first and you could use different programs without needing to read manuals. Now, as you say, everything is integrated from phones to pads to laptops and desktops. These aren't positional goods like Leica, being used by a wealthy elite, but by anyone who wants a first rate product that is simple to use, which is why they are widespread. And, they were the pioneers who got ripped off by the others, from Microsoft to Google.