Hetzner works because it was built a long time ago when talent was cheap, which it was because the property Ponzi wasn't at the stage where an average post-tax middle-class salary barely covers rent. Since then they've managed to stay afloat because it's only maintenance and small incremental changes from that point on.
Building such a new operation (and offering competitive prices) from scratch today would be impossible based on labor costs alone. This is presumably the same reason they don't offer their very-good-value dedicated servers in the US either, only "cloud" VPSes which are orders of magnitude more expensive.