Because the management of FR does not like Romney. I suspect the closer he gets to the nomination the more videos you will see.
The majority of real conservatives do not like Romney. He’s a sleek rich-kid statist spouting conservative rhetoric at campaign time. That’s a formula which has been employed successfully by RINOs for many decades. Only those who want another G.W. Bush or McCain should support him. He spent many millions in 2008 and came in behind the likes of Huckabee and McCain! This big-business “suit” will not draw the independent vote which is needed to win.