How come the condo has not been seized?
Probably because there is no criminal investigation at present. (As in 1:51 pm EST 11/14/2022.) The corporate bankruptcy filing would involve the business and its assets, not the assets of the owner(s), unless and until there is a showing by the UST (United States Trustee) in the bankruptcy case that the debtor (business) had made fraudulent transfers to Bankman-Fried or other persons. When that is shown to the court it can order a turnover from Bankman-Fried of improperly transferred assets. That is a claw-back action, and it is a routine feature of a lot of bankruptcy cases.