Sad but not too surprising ...
I have lost several good programs over the years to the big companies ...
Aldus Freehand for one - more usable than Illustrator but bought out and later canned.
And I am sorry about the team - for them and for the product. The loss of expertise will not be recovered (I speak as one from the IT industry).
My instinct says that the plug-in ethos may have been seen as too messy to be controlled centrally (as a manager I would have some sympathy with that view but not as a user).
Fortunately ASP has reached a state where I can use it for the majority of my stuff (Grad Pro just in time, and most of the pink gone!)
Not being a pro producing exhibition/sale prints, I don't need that last 10% - good luck to you pros in hunting for something as a replacement.
I also have the same problem with my cameras -- Olympus has moved its market