Presently I am informed that Binance and Huobi are powering down, so it does appear that they will be in a position to return the funds taken from their customers. Huobi has directly stated it will not use it's customer funds so again. Binance has apologized, but I am not aware of a direct statement from them they will not use their customer's fund likewise again. I hope the market keeps that in mind.

Stealing, as you point out, is taking someone elses stuff and depriving them of it. Even if the thief gets caught, or has a fit of remorse and returns the stuff stolen, the theft still has occurred.

If Binance and Huobi return their customer's funds, that will be good, and the right thing to do. I reckon they have still caused those clients financial harm in several ways, and expect that some of their customers who have suffered that harm will seek recompense. I do hope the exchanges justly compensate them, instead of forcing those injured parties to seek remedy in court.