Ask HN: Stack Overflow Architecture in the year 2070

So, I was reading Stack Overflow The Architecture - 2016 Edition [0] and one picture [1] shocked me. Five minutes ago I was reading about the IBM 360 mainframe (not sure how I ended in its Wikipedia entry). Anyway, the IBM 360 was big (big, for today standards of course), heavy and costly; my iPhone is a thousand times faster and fits in my pocket. So why did [1] shock me? I was thinking: "so, 50 years ago we had this IBM 360 thing, and now we have iPhones that are way more powerful. So, in 50 years would we be able to have a computer that fits in our pocket that has everything needed to deploy Stack Overflow?"

I'm sure the rack in picture [1] is decent for today's standards but I couldn't help but think "wow, that rack looks, big, heavy and costly!".

I was thinking about availability, performance, redundancy, security, etc. Do you think it would be possible to host the entire Stack Overflow site in my "2070 mobile phone" and serve with it millions of visitors as performant and secure as the current SO does?

[0]: https://nickcraver.com/blog/2016/02/17/stack-overflow-the-architecture-2016-edition/

[1]: https://nickcraver.com/blog/content/SO-Architecture/SO-Architecture-RackB-Bottom.webp