When It comes to trading platform, it doesn't matter if you first or last to launch, Forex has been around for long time and still see new platforms open every year. Crypto is still in early stage, when Binance launched there was already large exchanges, but in one year Binance grew crazy. It's all about quality service and advertising.
It really depends on their marketing strategy but hopefully they are going to comply with the regulations first to avoid any bad news like being fine, also I hope it wont' be a place where price manipulation will happen like wash trading.