My guess is that Hasbro doesn't even have an opinion on this, unless WotCs profits go downhill.My guess would be that Hasbro got cold feet on the Builder side of things, since you essentially don't need to buy the books anymore.
I think, WotCs learned that it is dangerous to announce a new digital tool before it's ready for an open beta. I doubt they'll actually develop their own VTT from the ground up, but I'm pretty sure there will eventually be more adventure tools.