In Europe, London and Berlin have much better access to capital and bigger startup scene; these things have to happen, you can't legislate them. Tax rate and business environment is the only thing that can be changed by at will and perhaps make the rest happen.
>It ignores factors such as cost of living (which is, at least, equally important), and quality of life.
Where Austria wins how? Don't cite average statistics: how is life in Austria better than the rest for someone earning ~€10k gross a month? Note that's always connected with the tax rate.
Want really cheap living? Go to Bucharest, great internet is a bonus, also many local developers, 16% linear tax. Want great quality of life? A waterfront property in Spain, Canarias, or even Bali, some guys work like that.
People may stay if it's ok, but to make them move to you, you need to be the BEST at some linear combination of all important factors.
>Nonsense. Young people need healthcare as well, be it for something trivial as flu medication or a visit to the dentist
Why do you need insurance for that? Just go and pay out of pocket. Btw there's no such thing as flu medication. The only medication you may need is something to decrease temperature, but that's OTC.
>or something far more serious.
Which is very unlikely if you are young. Even then, outside of US health care isn't that expensive.