You can bend over backwards all you want, but if you're going to claim that Apple's Unified Memory costs 10x as much as commodity RAM in terms of BOM, you better bring some receipts.

It doesn't cost apple $200 to go from 8GB to 16GB, it's likely 1/10th of that since they are ordering processors in the millions at the lowest point available in silicon manufacturing. I've never had an apple product fail either and I can't say that for other laptops (hp/dell) I still have my MacBook pro from 2011, using it as a NAS (running linux tho) my Dell from that year is long since dead.

Which explains why they had the exact same RAM upgrade pricing since the mid 2000s when they were using off the shelf Intel processors right? It's basically always been $200 extra dollars for the next step up above base for Apple RAM, even when they were user replaceable sticks that you could find compatible commodity versions of!