Think Juve are still in with a massive shout of getting him mate to be honest as they clearly want the player. Thing here is that they haven't stated they can't afford just that they don't think he is worth the agreed fee.
Juve seem highly confident they will get their man at some point this summer.
The thing is, from a negotiating point of view, in some ways it makes more sense to say "he's not worth that much" than "we can't afford it".
Just look at what you say yourself. You say that if Juve won't pay the amount, no one else will either. Maybe that's the effect Juve are trying to create? To force Liverpool into accepting a lower offer by making them think they wouldn't be able to get anymore than what Juve are offering.
In reality, Juve might think he's worth more than they are offering, but if they think Liverpool will accept a lower offer, it makes sense to try and save money.
Thanks to the ridiculous way the deal was set up, all the negotiating power is in Juventus' hands. They have the freedom to try and get the fee reduced, because they know that no matter what, Liverpool can't just walk away. That agreed fee is still there to fall back on. They haven't got anything to lose.