Why has focal raised their prices so much on Sopra line

With increased government spending comes inflation.  It depends upon where the money comes from.  
I do think we need to update our infrastructure.  They either will increase taxes or print more money.  Either way we will all witness less net income to spend.

if you have the money pull the trigger.

@larry5729O
On the other hand, Larry, one way to look at it is, if it turns out as you say and some people's finances get squeezed either by inflation or taxes, they may find themselves needing to sell off some gear!  Maybe there will be some good deals.

With a saving of $13.5K, you could get a pair of these Outstanding Liberty Audio X-VOX Loudspeakers, which are a sleeper in the audiophile community; you can thank me later... ; )

X-VOX LOUDSPEAKER SYSTEM – Liberty Audio

Wig

Market is the market.
If you don't want to buy them, don't buy them.
Don't complain of gouging, there is no such thing.
No manufacturer will price himself out of the market.  Clearly there are sufficient customers at this price level.
OP presumably doesn't value this product as highly as the market does.

Of course if you really want to shoot yourself in both feet you can buy Moabs much more cheaply.

1-  Because they can.
2-  It is cheaper than building a new factory and advertising the product.