I know Binance is the largest cryptocurrency trading platform in the world, but is "Binance offline" the reason for losing 25 billion dollars of the market?
In years to come, if they have such issue, they would even loose more than that, the losses we are talking of is the profit that they ought to have gotten from the trades that would have happened within that space of time they were down, and binance is not only the ones loosing, there are people that would lose their trade too, those who are using binance platform to trade or have money inside binance wallet and linked to another trading platform.
What binance would even loose would be nothing compared to what all traders would lose at that time, but unfortunately, they can never avoid things like this because there would always be need to carry out Maintenance at a certain point, and because the market runs 24/7 unlike some sites where you have to do at midnight when people are sleeping.