Every team pays for decline phase, or doesn't every have a player over 32 or so on their roster. It is the market all MLB plays in. Or, they'll just eat the money, or they revenue will keep climbing, or they'll trade them off, or, the decline won't be awful. Fans tend to over estimate how "crippling" contracts are (and I am not alone in that opinion, the fangaphs guys post that all the time).