Personal anecdote:
A relative of mine has his own business that covers all sorts of IT stuff.
He has a starlink running permanently as a backup because a couple of times a year his fiber experiences some downtime.
Terrestrial wireless would be faster, more reliable, and less expensive. Near the White House, it could link between multiple other government building and have no recurring expense. Starlink is worse, slower, and more expensive.
Starlink still seems like an odd choice, since having access to fiber implies 5g is available, too, and the latter costs half as much and is faster/lower-latency. Maybe it makes sense as a backup for the backup, though.