Just to back up my short comment as I’m a bit more awake now. We tried to deploy and enterprise store front on windows 10 and it didn’t even work properly so we gave up and removed the store functionality by GPO. I suspect the whole thing is sticky tape and string behind the scenes.
Really, the old fashioned non store approach is still the best way to get software despite the promotion otherwise.
If you’re after games and stuff on the windows store, watch out because it isn’t very well moderated. There is a huge amount of stuff on there that exists because Microsoft paid developers to build apps by quantity and not quality. You will find also that a large quantity of them are data gathering privacy nightmares. Also there’s a ton of typo squatting so things aren’t always what they seem. It’s a textbook example of how not to run an online store front.
This is my experience with the Store too. Some developers refuse to provide a proper desktop application, so I'm forced to use it in some cases. I don't think it works like it should more than 50% of the time. Your assertion that it's all sticky tape and string is exactly the feeling I get too.
One fun incident was that I suddenly couldn't start applications any more. After logging in to the Store itself, it turned out Microsoft had decided to block my account. No actual reason was given, but they would unblock it for me if I provided a large amount of personal data. Another account wasn't hard to make, but if you have made purchases or are nearing a deadline, that isn't a great thing to be happening. That's not the main problem though. Applications or the Store itself simply refusing to cooperate is generally the issue.