The UK isn't unique in the "how its done" development of offshore wind farms. Auctions for leases/licences are the norm. Conditions attached to the leases affect the value achieved in the auction.
All over the world, those with the expertise to build out the desired capacity will be very much in demand, and to get your projects taken from drawings to production in the time scale you desire is going to be a very competitive market. The companies concerned can build these things in any part of the world they desire, and their greatest problems, are not in securing finance or winning lease auctions but in having to scale up capacity and secure supply either from within or from the companies producing the components.
As covered on the thread before, much of the gubbins for wind farm infrastructure comes from overseas, but agents of government look to ensure knock on benefits for local supply chains in the conditions attached to the Auction. From this article it would appear that a "the sale notice includes a 20% credit to bidders to encourage direct investment in domestic US supply chain development or workforce training programs – a first for the US government." That does translate presumably to lower overall direct receipts than would have been the case without the condition being attached.
US announces the first offshore wind lease sale off the Carolinas
No doubt one of the bidders will be Ørsted the largest offshore wind company in the world, and an example of a different approach adopted by Denmark, to that of the UK in offshore wind energy. The Danish Government own a majority stake in Ørsted, will suffer its losses of course, but also enjoy its dividends. The UK adopts an equally valid approach, takes a no taxpayer risk to development and no liability for company losses, but foregoes dividends and capital growth.
Regards Neil