Romo should not even seriously be considering this, for reasons already stated.
That said, from CBS’ side, unless CBS thinks he is bad (which seems impossible to believe) the idea of paying him $10-$14m is a drop in the bucket for what they pay for broadcast rights so while it might be a lot to us or compared to other broadcasters. The networks pay like $40 billion they are going to want to retain someone as popular as Romo. Fouts probably makes millions too.
Romo should leave himself an out for the SNF gig, that is debatably the only more high profile job than what he’s got now, would still get a SB rotation, although not the CG I guess. I know some don’t like his style but he has grown on me and has, in just 3 seasons, already positioned himself to be the TV voice of the next generation of the league. Monday nights would be a waste of his time.