This sends a signal, and could hint at things to come.
But, given we're not two weeks out of inauguration, it's a signal that at least some oligarchs are convinced that physical proximity to Trump will help them achieve their Machiavellian ends. It will be interesting to see who else follows along. Bezos has had a place here for a while.
It's a good time to be a realtor who specializes in Kalorama, that's for sure.
I haven't followed this closely throughout history but I bet we're going to see cycles of people with power cycling in and out of the area based on who is in office and what they need to influence the government on.
You buy a home to entertain powerful guests.
The Conways famously purchased an 8 million dollar mansion during the Trump administration, IIRC. This stuff goes on all the time. If you pay attention to these stories, you can start to understand how power really works in the US.