Of course it's not a concern for all users, definitely the network one, but I think you're underestimating how commonplace RAM upgrades are. In my own circles

Of course it's not a concern for all users, definitely the network one, but I think you're underestimating how commonplace RAM upgrades are. In my own circles (so anecdotally) I've had plenty of conversations over the last 20+ years about helping tech and non-tech people upgrade RAM on their computers, including laptops.. And in the last 5 years I've heard plenty of people be surprised (and bummed) that they can't upgrade the RAM on their Macs post-purchase anymore. And of course maxing out the RAM at purchase time is a complete rip-off compared to market prices. Every Mac I've owned (5 machines across desktops/laptops from 2006 through to 2016 I think), I eventually upgraded the RAM myself via aftermarket parts at reasonable market rates and it greatly extended the life of the computer. Given the premium cost you already pay for a Mac, not being able to do this anymore is a deal breaker, for me at least.