To develop a game to console (xbox and/or ps) you would need a development license/dev kit. Unity did offer a option.
However you still needed a license for the desired platform, plus a full dev license of unity.
A console Dev kit costs money, in the below article ps4 devkit was about $2500.
http://www.polygon.com/2013/7/24/4553842/so-how-much-does-it-cost-to-develop-for-playstation-4
However Xbox One and PS4 have opened up this cost by providing a Dev Kit loan option. However one needs to apply of course.
This includes having work to present and prior experience. Also it is mentioned that not everyone will get access and if one has a Dev Kit, it wouldn't be a walk in the park..
What are the criteria for receiving Xbox One developer kits?
We evaluate each developer individually on its own merits. In the initial phase of ID@Xbox, we are looking for experienced independent game developers who have a proven track record of shipping games on console, PC, mobile, or tablet, or clear evidence of a game well in flight, such as a successful Kickstarter or entry in a showcase event such as the IGF. These developers will help us smooth the path for those who come later.
http://www.xbox.com/en-us/Developers/id
http://us.playstation.com/develop/
Here's a good read from a indie dev using unity and the costs (he also drops a point about console plugins costing 'hella-expensive'
http://www.andymoore.ca/2013/05/unitys-license-fees/
Sorry its not the best of info, Im having issues with google at moment. however I added the links if you wish to read more
As SmallG mentioned, PC gaming has a large audience and sure if a option to port comes down the track awesome, though I studied C++ for 3 years on and off. And I am so stoked with TGC's new platform it limits the stress and time for me. And I know friends can access my work with limited hassle
However If yourself (og poster) are keen to work on console thats why I provided the links. Have a good 1
MOS Technology 6510, VIC-II, SID 6581 i wish...