It’s early days yet, they’ll have to continuously keep iterating on it if they want to be able to compete; both Unity and Unreal have been around for over a decade, and as a result are much more polished.
Personally, I don’t see any reason to do anything other than take a quick look at Stingray right now, especially with their corporate lockdown so that nobody can extend it, and nobody knows where they’re going with it development wise.