I don't think if you sum up all the value on all the leases of wasted buildings it would be a drop in the bucket against the psychological damage (e.g. distrust in the system) being caused by this administration. Like unless it's more than 1% of the national budget (i.e. > 67 billion a year) then it isn't worth the chaos.
And a competent administration that wanted to end leases really shouldn't have started RTO, so let's try not to fabricate plausible deniability here.