Citation: I started two failed startups while working day jobs... and could afford for them to fail because I had solid work, despite the thousands of hours I had invested in them over years.
You can't really tell if something's possible if you begin by simply complaining it's impossible. Is the world rigged toward helping rich kids? Sure. But fools and their fortune are quickly separated. Using inequity as a basis for complaining and giving up before even trying is really the fastest road to bitterness... and it's not even a fair or knowledgeable take, since it doesn't come from true personal experience or personally failed attempts which are, if nothing else, highly educational.
Citation needed. I’m quite sure that working a second job does not go down well with VCs. In most cases the networking required and high risk of failure is only achievable through having well-off parents.