All the data is from government databases directly, aside from CourtListener, which was recently integrated. It would be good to specifically mention CourtListener's contribution.
How did you get all that data from government databases directly? Do they provide some sort an API for bulk export?
It is all be public records. The source of the original data is the court system. If a 3rd party physically scrapped it from the court system, others should be able to digitally scrape it.