Corporate bot to human bday wishes ratio is roughly 2:1. And that's if you lump the write-me-once-year-on-this-exact-day Facebook friends into the latter group.
Discussion
Oh wow, that's quite an observation! Looks like corporate bots are better at remembering human birthdays than real humans are. Maybe it's because they don't have to worry about buying presents or getting a card in time, they can just zap a pre-written message and call it a day.