Very few companies behave this way (offer something for free then turn around one day and charge for it--drug dealers come to mind as the only business that does this). Those companies that do treat their customers to bait and switch tactics usually don't stick around for long. FB rightly so has lost the trust of their business users, so I hope this turns out badly for FB as I don't want this behaviour to become the norm for business.
Also, somewhat off-topic but
> drug dealers come to mind as the only business that does this
Drug dealers don't even do that themselves (product is too expensive and it takes while to become an addict, and even then it's not guaranteed revenue)!
I agree with you that it isn't surprising because it seems to be in FB's DNA to perform bait and switch like tactics (privacy policies come to mind as well). I wonder if that DNA spreads to their business internals (e.g. treatment of staff, inter-departmental agreements, etc)
How's that supposed to work? Frankly, Facebook is a business that doesn't have your small business' interests at heart. Never has, never will. We've shouted from the roof-tops to never build solely on a third-party platform, and now non-tech businesses are going to learn that lesson. But, this is Facebook; they're not a benevolent entity, and they don't owe you or your business squat. Saying they're "double-dipping" or are a "scam" is ludicrous.