> Assuming he has it, could the courts force him to sell $40B in assets?
In principal, courts could either order him to complete the buyout (specific performance) or make those injured by his failure to do so whole (money damages). If they chose the former and he continued to fail to do so, he could be punished for contempt of court, either civil contempt (including, e.g., progressive fines and/or imprisonment until and unless he complied) or criminal contempt (fines or imprisonment of a set amount of period.)
In principal, courts could either order him to complete the buyout (specific performance) or make those injured by his failure to do so whole (money damages). If they chose the former and he continued to fail to do so, he could be punished for contempt of court, either civil contempt (including, e.g., progressive fines and/or imprisonment until and unless he complied) or criminal contempt (fines or imprisonment of a set amount of period.)