No subsidies is a good start. I believe they haven’t fully taken into account how heavily taxed fossil fuel generation is in Europe - which is effectively a subsidy to all competing energy sources. But still headway.
I think the lower taxes on other energy sources in the US are why this is further away for this country.
I’m also not sure offshore wind farms are as environmentally friendly as advertised - besides the birds killed, there may be knock on effects on wind patterns. But better that happen on a cheaper platform than a more expensive one anyway.