This definitely sounds like it'll have a bigger impact on the actual comics than the Disney-Marvel deal. It sounds like there will be a much bigger emphasis on making and keeping the characters commercially viable, on their existence as fodder for other media.
On the one hand, I could easily see this leading to some changes that I would not at all be unhappy about: Fewer and smaller mega-events, less focus on the "grand tapestry" of the DCU and more on the individual titles as their own entities, more all-ages stories, etc.
Even if all that comes to pass though, I'm *still* going to be very wary of this because it seems likely that the new management is going to be much more insistent on playing it safe, less willing to do any sort of bold experimentation. If nothing else, I can't imagine this deal *not* leading to less creative freedom.
Though I'll hasten to add that I have no idea what I'm talking about when it comes to this sort of thing.