Not sure exactly how it works but servers are in a variety of sizes and functions and prices. Based on price a sever can do somethings and not others.
Way back in the beginning of pc's there was a company called AOL. Everyone hated the constant issue of being bumpped off line and haveing to get back on only to get bumped off again unless they went on line in the wee hours of the morning. The reason was, there subsicriptions were coming in faster than their severs could handle them. Remedy, get bigger faster servers. Well playing ED, one is mandated to on line server issues. If FDev hasn't increased their servers abilities which isn't free by any means, then there's going to be issues when more and more and more platforms are add which add more and more and more users all demanding server intervention. It's a catch 22, one increase their severs in incriments, the new server can handle more than they have presently, so as to not waste their ability, they sell more subscription, hence now they need more better servers to handle the additonal subscriber's, it will never end. It's a bit like increasing one own pc because the previous is to small or slow to handle the new data. In a year or two, one has to do it again and again etc. It will never end if you want and who doesn't to stay on the fore front.
I've been around since before computers, and for the first 20 years, had no problem keeping up with the technology. But as time passes, the technology comes faster and faster, now it has passed up my own abiliity to keep up and has left me in the dust. Hence I know longer because of the constant expense of upgrading pc's and the various components to that of a simple console which does all of it for me. Changing it every 4 to five years in stead of every year, is a lot less expensive, and doesn't require any more training. Just plug it in, turn on, and click. One device for the entire family although, a lot of families whom have mutiple gamers also have multiple consoles.
I'm waiting for a sandbox game where as in virtual reality I can go to a bar, pick up some young chicky poo and because my avatar looks different, and can perform diffently than my real self, go to a motel and... But even that will be grounds for divorce some day. LOL