> It’s also worth noting that, while cable has various limitations, it was an earlier-deployed technology. So while Spain has closed the gap recently, the US enjoyed a healthy lead over the last decade. (For example in Akamai’s 2015 study, Spain was #30 and the US was #20.)
Spain deployed ADSL back in the late 90s, and had it available in relatively rural areas before major cities (e.g. London) had availability.
Spain started deploying FTTP a few years ago, everywhere, to replace the ageing copper infrastructure.
Spain never really had a large scale cable rollout outside of fortunate areas of a few major cities. For the vast majority, it was copper line services only.
Now ~everyone can get FTTP, and anyone who has that has symmetric services.
There aren't many major applications that benefit from symmetric connectivity as a rule, because the vast majority of the world (including those in Silicon Valley) dont have that capability. The userbase for such applications is relatively tiny.
This is part of why we depend on 'the cloud'. The idea that anyone can host anything depends on decent upload rates. Why couldn't an on-prem equivalent of Dropbox be mainstream if everyone had symmetric connectivity 20 years ago already?