I don't think that binance is a threat to cryptocurrency space. we know that binance is a large exchange and has many users and we also know that most investors already trust their exchanges to trade.
Besides that, if binance is really done that, the members will leave binance, and binance itself will lose their benefits of the left of the members. They will lose the trust of the members, and that will be bad for binance. As a large exchange, binance will do many things to give benefits for the members so they can get more members/traders to trade in their site. In a long time, binance will grow more if they can get huge traders that will come to their site.