Mises spoke out repeatedly against the interventionist system that existed in his lifetime and that has only intensified today.
intensified interventionism? only in some ways, whilst in others it has dramatically reduced eg Thatcher’s abolition of credit controls, reduced barriers to capital movement, privatisation, anti-unionism. You won’t find much support from socialism for the idea that interventionism has increased, rather that it has reduced and has been handed over to anti-democratic forces of private capital. What interventionism there is seems dictated by the forces of capital, not of labour, not of socialism, not of democratic will. ‘Rolling back the state’ was and is a mantra. You seem to represent the forces behind such a movement as socialist, or at least anti-capitalist. I can’t see that at all, though I can happily concede we (thankfully) don’t have a Miseian world.
In the post where he admitted that real wages have fallen, krazy kaju said, “The reason for this is that…”
Sure, but such a statement completely contradicts his claims in the OP. The opposite argument can be put that despite “the market is hampered, but not abolished” it fails to achieve what you(?) and the OP believe it should and does do. Accepting the OP, we could argue that supposedly increased wages are a product of (what you claim is) increasing regulation.
It just seems that you are committed ideologically, and all evidence is rationalised along such lines. Fair enough, but, let’s not pretend otherwise? I mean, the OP claims wages have risen because of capitalism and free(ish) markets, and yet later admits wages haven’t risen and blames it on socialism! This is just shifting the goalposts and re-rationalising the conditions each time to support capitalism, isn’t it? It looks like it to me.
I don’t think it’s even coherent to say there is a range in which socialism is on one end and capitalism on the other.
Maybe the OP and other commenters need telling this ? I see capitalism and socialism as anti-thetical. IMO we have an essentially capitalist system - markets, private property, profit. The essence of socialism is public ownership of means of production - something we really do not have. On that basis, we’re capitalist, not socialist. In such conditions, to see extreme ‘pure’ capitalists implore us onwards to greater purity reminds me of Stalinist liquidation of the Kulaks - “We must intensify the class-war!”. I find it really quite disturbing tbh, but…I’m a socialist, so I would, wouldn’t I? 
The problems are not inherent in the free market, but in the institution known as the state.
So you say. Such views seem to ignore the reasons state came into being and the functions they fulfil. Also, there’s a (imo false) belief in perfectionism amongst this ‘pure’ capitalist stuff - all the failures are blamed on the state, lack of perfection in markets etc. There seems to be a lack of appreciation that perfection is impossible and the state (handily enough for anti-state ideologues) gets the blame.
The problems of socialism are inherent in the socialist program, which neglects the importance of incentives and suffers from the inability to coordinate production.
Granted, the price mechanism is a great transmitter of information. But now we have IT and computers and potentially near-perfect knowledge of demand/supply. I’m also atagonistic to the notion that the market should be handed primacy over human production and distribution, even if it were provably the “best” way. (The ‘best’ way is determined by one’s own wider belief system - there is no objective measure)
For the Misesian, the obstacle is physical and easy to spot: the state.
Doesn’t that strike you as a little simplistic? I mean, why did the state evolve at all and so pervasively if it is so inherently and obviously problematic?
Interestingly Marxism and anarchists and Miseians converge here - on the abolition of the state. For Marxists the state will eventually wither away as social institutions and conventions develop to replace it - organically and on a material basis. It isn’t an ideological wish, it’s a description, whereas for anarchists and Miseians it’s simply a wish based on the view that the state is the essential source of all problems? [Which begs the question why did it evolve in the first place if it is so damned dysfunctional?]
For the socialist, you have a whole bunch of intractable problems
Maybe.
Ideally we could run experiments and have a socialist bloc and a Miseian one, or whatever else. And just see what works, and what happens? I’m with Bertrand Russell and Einstein on that. It isn’t as if there’s no good grounds for a belief in socialism (though I know this board is vehemently against it)