Re:tl;dw
It may surprise you to find out that not everywhere in the world is like the UK. Some countries, for example, are a relatively long way away from anywhere else and so building infrastructure to connect those places to the internet is reasonably pricey. Add in low population, and low population density and you get a great place to live and, unfortunately, a small number of people to pay for that pricey infrastructure.
So, whilst I am able to connect to the net through fast VDSL, I am unable to download a great deal without hitting my broadband limit and thus having to either pay large amounts of money for overage or having my connection speed dialed down to dial up speeds.
Having to use half of my download cap on upgrading the operating system isn't my prefered option. So instead I will be forced to buy a dodgy copy on a DVD from a local market. Which seems a little like shooting yourself in the foot when, if Apple were to sell me the DVD instead, they would be the ones getting the money!