Access to trial transcripts in many jurisdictions is often behind complex paywalls/distribution agreements or some really archaic time consuming process to get official copies. It's not unheard of for an interest group to reshare these materials relevant to their objectives.
Its similar to the situation with scientific papers and the sci-hub site trying to remove blockers to access; people have tried before to make sci-hub clones for trial transcripts/court decisions/published legislation but there is huge money in this industry for companies like LexisNexis etc who often litigate to shut them down. Legal firms who need access to these details just see deals with companies like LexisNexis as standard cost of doing legal business - much like you might need a github account for every software engineer, lawyers will usually need individual accounts for services like LexisNexis to get latest court decisions and legislation.
Its similar to the situation with scientific papers and the sci-hub site trying to remove blockers to access; people have tried before to make sci-hub clones for trial transcripts/court decisions/published legislation but there is huge money in this industry for companies like LexisNexis etc who often litigate to shut them down. Legal firms who need access to these details just see deals with companies like LexisNexis as standard cost of doing legal business - much like you might need a github account for every software engineer, lawyers will usually need individual accounts for services like LexisNexis to get latest court decisions and legislation.