Originally Posted by DoctorNarrative 
They have said bluntly on their forum that DAO did not sell well enough and EA would only green-light a sequel if it was more console-focused and streamlined.
The funny part is I bet DA2 sells worse.
Somebody need to go check his facts:
DA:O is BioWare best selling title of all time and they started working on DA2 8 months before Origins was released.