"Speaking during a press conference today, PayPal said there would be many issues on the path to space payments including...customer service."
How about they fix their current customer service issues?
I made a large Ebay purchase recently that was temporarily rescinded by PayPal's anti-fraud service. That wasn't the issue; I admit that a first-time purchaser dropping over $2000 looks suspicious, and I'd rather them be a little over-zealous if it means catching more fraudsters at an earlier and easier-to-resolve step. Being a first-time purchaser, I called up their customer service to get a better explanation of what would happen, and I spent close to 2 hours on hold before I finally was put through to someone (he was rather helpful, by the way). When I called a few days later to follow up on what was happening, I spent another hour+ on hold before I happened to check my account and saw that my money had finally showed up in my account and I could finally pay the seller. While I may have been calling at somewhat busy times (both were in the evening PT), guess what, you should staff your call centers with more people during high-volume hours. No one should have to wait on hold for over an hour.