Grand Jury indictment did not occur for "nothing"
Contrary to popular belief amongst ignorant people to be falsely indicted by a grand jury is extremely difficult if not entirely impossible for a rich famous person. A grand Jury is not swayed by a "racist" district Attorney, grand jury looks at a great deal of evidence before deciding to indict. Michael Jackson being indicted was already a huge red flag of his guilt. The Arvizo family, portrayed in pro Jackson communities over the years to be "grifters" out for money had enough of a case to be taken seriously regardless.
A family of actual grifters would have easily been shut down by the lawyers of this rich powerful man if their case was done in the name of extortion.
But this was not so . The Arvizo's never sought financial compensation. They sought justice. Their demands were to put Michael Jackson behind bars for the atrocities he committed towards the family and the sexual violence he committed against Gavin Arvizo. A 13 year old boy in remission from an aggressive Cancer. Their demands were not financial and this was a criminal case, not a civil settlement demand.
The Arvizo case is poorly understood but was valid.