That might have been changed so as to allow anyone to host. With StarCraft II Blizzard hosts all the games. This also has additional security benefits since it obfuscates the IP addresses of users from each other.
Even if it did cost as little as that, it is still something executives would have issues justifying. Considering companies like Sony are shutting down the playstation store for older platforms and that makes them money…
All big developers do that now pretty much. You will be hard pressed to find a big budget game released recently that has not done that.
I only own classic and have no issues loading up Warcraft III, joining custom games and playing. If the custom games are stable is another matter, but even owning Reforged will not fix that.
The WebUI seems to have performance issues on dual GPU systems, specifically those with Intel integrated graphics and a discrete GPU from AMD or Nvidia. The way it is configured causes it to default to software acceleration despite 2 capable GPUs being available. If development was not halted I am sure this would be solved by now.
Same reason a budget internet user might not be able to play online games because a hoard of other budget internet users are streaming content nearby. Sharing happens and if not at Blizzard’s level, it will be the connection in/out of the server centre that hosts the servers, or the nodes between that connection and the players, or the local ISP of the player, e.t.c.
Now companies like Amazon offer a solution to such problems with elastic clouds. However these are not at all economical to rely on compared with an owned server, and might be difficult to integrate with their current infrastructure.
This is highly off-topic… Such countries only make so much pollution because the rest of the world does not. For example making steel makes a lot of pollution, but most products made from steel use steel made in places like China, especially in Europe. The result is that countries like the UK which barely make any steel anymore have effectively transported their pollution to other countries like China since they still use steel. This does not just apply to steel or China, but many other industry chains and countries as well.
Such countries are also trying to turn the situation around. For example China has banned cryptocurrency mining, with cryptocurrencies like bitcoin using as much power as countries like Argentina. The west has still to apply such bans, at least on crypto currencies that have degenerate work spirals like bitcoin.