There's a misconception at the heart of your argument:

Apple is continually taking a market risk by trying to make their stuff proprietary.

They're not. They're absolutely not. Apple realized early and often that proprietary hardware mattered way the fuck more than proprietary software and built their entire business model around it. There was a brief shining moment in the Sculley era where you could buy an Apple clone, but it was the Sculley era so you were paying extra for shitty software that nothing ran on and didn't accomplish anything and was also beige so why would you do that.

Theoretically you could build a "hackintosh" but you need to start with a DVD of Snow Leopard which says a lot.

Did you know that the market cap of Airpods is greater than the market cap of Roku? Shitty tinny little lithium pills that die every eighteen months and people buy those things like they're pacemakers. Now - Apple could make the batteries detachable (lol remember when phones had spare batteries? thanks, Apple!), put an extra slot in the charging case and double the useful runtime. They could even sell spare batteries. The connector has been standard for 30 years. it is used widely for headphones. But if Apple did that shit you'd see a million MMCX batteries that are cheaper than Apple's and Apple couldn't sell you a new set of AirPods every eighteen months.

And the thing about Apple? Is they're the dicks that fuck over their customers first and then eventually everyone else's life sucks. Things Apple took away first:

- disk drives

- batteries

- memory card slots

- keyboards

- headphone jacks

And every time, Android (and Windows!) users went "WTF" and twelve months later, Android users were just as fucked as Samsung and Motorola and everyone else went "look, people pay eighty gajillion dollars for iPhones without keyboards so obviously people who don't buy iPhones don't want one either."

Apple's lack of innovation punishes everyone else because they flaunt the fucking law.