There’s a reason there aren’t any aristocrats living in the shagging things anymore - you need a big staff and a lot of resources to run them! They only made economic sense when there were throngs of peasants to work in them for cheap or free, and people had very different expectations when it came to energy, heating and lighting.

It’s hard to see what OpenAI could have gotten out of this purchase, except the chance to fulfil their Bond villain fantasies.