The ratio of nepotism hires and who-you-knowism in that industry is insane. There's a reason you have multi-generation families all "in the business".
Met plenty of people in NYC in the industry, and they are either nepotism hires or surrounded by them.
Labor organizations exist to turn disparate sources of a supply (labor) into a more monolithic source that can control some or all of the access to that supply, driving up the price, which is good the members. They may have controls in place to try to prevent nepotism or other bad hiring practices, but at the end of the day that can be a difficult problem to detect and prevent.
The guilds do still have objective criteria to get in, and pay scales so that regardless of if you’re a director’s child or not, you’re getting the same pay as everyone else with your title.
Yes, nepotism in Hollywood is a well-known issue, but it’s also an issue in pretty much every industry that’s been around for multiple generations. I imagine we will see the same thing happen in tech— just as it has in healthcare, politics, sports, law, finance, and all manner of highly desirable skilled professions