I specifically said, "businesses that don't understand this" to talk about the subset of businesses that don't understand decentraliztion. I didn't say that all businesses didn't understand decentralization.
There are many businesses that do understand decentralization, but centralized exchanges like Bitfinex definitely don't. If they did, they wouldn't be holding the money of thousands of users. Lack of regulation around cryptocurrencies is only one implication of decentralization, and for that matter, it's one that isn't permanent. Decentralization makes regulation hard to enforce for individuals, but large centralized businesses are going to have a hard time avoiding regulation in the long term.