I recently switched of Dropbox in favour of Hetzner's hosted Nextcloud deployment and I'm very happy. One step at a time, I'll work towards being rid of corporate US tech.
Also, if anyone here is using Notion, you should check out Suite Numerque's Docs which is an open source competitor being developed by the French, German, and Netherlands governments. It's looking very promising. There's scratchpad here you can use to try it out.
First of all, it's not for sure that there'll "always" be enough wind, especially in a changing climate. That said, the UK is blessed with extremely plentiful wind resources, and it's great that the UK is continuing to take advantage of that resource, but it also makes a lot of sense to keep the domestic nuclear industry alive.
The UK is building out more HVDC connections to neighbouring countries, including one to to Germany, and there there will continue to be strong demand in Germany for imported electricity. Having more domestic electricity production means cheaper electricity at home, and more opportunities to trade electricity with the continent.
Also, by keeping nuclear power expertise alive and developing it further in the UK, the UK will be better positioned to help build nuclear power plants in friendly countries who don't have as stable wind resources as the UK.
This investment is not necessarily in conflict with the UK's investments in wind power.