You see MacOS devices completely dwarfed in both users and profit per user by iOS devices.
As that executive, who keep in mind probably doesn't share your opinions on open technology or they would never have got into that position. What decisions would you be making on the direction of their platforms.
I can't help but think we're only going one way and it's not towards something more open.
You can see it in the back and forth dance on the Mac. Will Apple ruin it by closing down too much? Time will tell.
DOS came with a debugger that let you modify and create your own software. The Mac didn't.
Planned obsolescence was also not something new --- the infamous Lisa was designed with clock hardware and software that couldn't make it past 1995, for a machine released in 1983. (The PC AT, from 1984, has an RTC that went to at least 2000, and is still a design in use today.)