For example, the Netherlands has plenty of space for wind on the North Sea. But sometimes of course there is no wind. If there is no wind in the Netherlands, there is a good chance there will be wind north of Scotland.
With the current prices for nuclear power plants, you can easily run cables from the Netherlands to the north of Scotland and still be cheaper than nuclear.
At the moment new nuclear is insanely expensive. So we can do a lot of really weird stuff and still be cheaper than nuclear. Will nuclear get cheaper? Who knows.
What we do know is that the EU has targets for 2030, 2040, etc. We don't have time to wait for nuclear to get cheap. We need to act now.