I do see where you're coming from, but in my experience, you can have all your ducks in a row and still can't have things functional for all users at one time.
I work in marketing for a small company. I sit 5 feet from our webmaster. He 'flips the switch' to launch a website and it can take 1 minute or 1 day for the new site to appear for the handful of people we have testing it. That's how these things work. Apple definitely has a better infrastructure than we do, but they're also pushing this to millions of people. They most likely did all they can do on their end and it's up to time to fix the rest. Same thing happens when there is an iOS updates. Not everyone gets them at 10:00 AM PST.
Your small company doesn't have a market cap of nearly a trillion dollars.
And I've never had any trouble getting a software update when it was released. Apple knows how to properly queue those and to stage them before hand on enough servers to keep the process moving. Apparently the Apple Pay folks didn't get the memo.