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That being said, you are certainly right that Vienna (and Austria in general) is not very attractive for entrepreneurs.
Income certainly has, though.
And it of course depends on the sector etc. but salaries are generally comparatively low and stagnant in much of Europe.
"people are poor" - maybe, I've not looked at any stat so I'll believe you.
"entrepreneurs are considered third class at best" - how is that related to how liveable a city is? And yes, american-startup-style entrepreneurship isn't as encouraged everywhere in the world, personally I think that's a good thing.
"tech people with means are negatively viewed both by the young population and the old" - Again, what's that to do with how liveable Vienna is? Also I'm not surprised. I'm a tech person myself and I don't have a great view of tech people. There's good reasons for that.
"Of course, there is no AC" - a lot of Europe doesn't really use AC (eg France). Vienna isn't even a particularly hot city.
There are many people that depend on social welfare, but nobody is starving and there's lots of public housing and free healthcare. We certainly have no slums.
There were some scandals recently about slum landlords, but the point is they were caught and already legislation is being proposed to prevent even these rare, but horrible, cases to slip by.
One of these things. Its just that they're so uncommon in Europe you've probably never even seen one.
I do not share your view at all.
(Disclaimer: I've also lived in many top tier cities around the world. Vienna is still a lot better than most of them, but don't kid yourself that its because they worked anything out beyond taxing the living daylights out of anyone who tries to build things..)
You can't make bread out of thin air. Vienna has a serious welfare budget.