The thing is, Boras can't give in and give one of the "haves" a bargain on his remaining guys. If he has to give in and have someone sign for less $$/yrs, it has to be to one of the teams that couldn't afford the long term/high dollars contract. If he gives in and they sign with, say, the Yankees (I'm talking Snell and Montgomery), on a one year/player option deal, then those teams can continue to collude and drive down future deals.
If they sign the same deal with a poor(er) contender, then the "haves" know they'll need to pony up next year if they want a difference maker. Get 'er done, Brewers.