Sir, you are kind of optimistic.They do have dedicated servers.
It's known from the very early stages that ED uses mostly P2P-instancing networking model. Events handled from server-side part are background mechanics like Market prices etc.
Now, little bit sceptical opinion of mine. Look... We have something which can be related to spacelegs interaction and it's called multicrew. This is actually how game would behave on networking model ED uses right now (do your own picture). If i can remember well, FDev didn't even bother to optimize connection stability between two or more peers not to mention any perceptible backend polishing during this 2 years since it's release.
I would love to believe it's purposedly done because of new model being coded but... it's FDev and 6 year of experience. Compared to e.g No man's sky which was doomed to wither short after release and look how game changed after not even 3 years. ED is mismanaged and done with laziness.
In addition, the currently turbulent incident with in-game hacking does not add much faith to FDev.