Not every business is a nimble startup. If they're buying companies... they probably aren't either. Something like your payment system is so important it's no

Not every business is a nimble startup. If they're buying companies... they probably aren't either. Something like your payment system is so important it's not something you can just change on the spur of the moment. Doubly so when you're big, and have a reputation. Honestly i'd do the same thing if I was in their shoes, even though I personally would prefer the API of stripe. You gotta standardize on one system, and it makes sense to choose the path of most likely stability.