It's funny, the way of life in business in most countries perhaps on Earth is to not ask their customers for support. They could have said, "Hey, if you like us, you should know we are not earning enough commissions on trades and will have to close down in three months if you people don't do more trading and bring more people to crypto." The largest movie/dvd/video store I believe in the world, Scarecrow Video in Seattle, did that about five times over the last ten years and now they are full operating fine as a non-profit, same place and amount of staff as before.
But it's a total different business model, I guess they can't really keep up with the competition, that's why I just many times before, crypto exchange are a niche market, it's a tough business and I'm thinking that the average lifespan could be around 3-5 years. If during that time you are not making money, there is a big chance that you need to shutdown your business or you need to evolved to cater new consumers. But since the bearish market, they get themselves in position wherein it becomes a burden just to maintain their business. So they don't have choice but to close it down gracefully.