By going after law firms one by one Trump was having success getting the "weaker" firms to kiss the ring.

To counter his divide and conquer approach 500 Law Firms have banded together to file a lawsuit claiming Trump's EOs targeting law firms are unconstitutional.

https://apnews.com/article/trump-law-firms-threats-executive-order-1ed67d108ff4dc311c907b96c465dbe5