REGARDING "He has been sued 3500 times"--
Large-scale construction projects NORMALLY work on a "progress payments" system. Let's say it's 10 million in 10 payments.
Trump ROUTINELY would refuse to make the last payment, claiming the work wasn't done satisfactorily. When the contractor would threaten to sue, Trump's response would be "My lawyers will keep you tied up in court for years."
As a result, many smaller contractors DIDN'T sue and took a major financial hit, in some cases even going bankrupt.