The thing is, the entertainment business is still a business. It's about making money. And right now, the business model that's working extremely well for CBS does not call for a new Star Trek series at the moment. Some Trekkies may not like it, but some Trekkies didn't like it when there were multiple Trek shows on.
Also, there's no guarantee that even if Paramount still owned Trek, they would push for a new TV series right now since the collapse of UPN (UPN was the only reason why we had VOY and ENT).