Just look on twitter and you'll find loads of 20 year olds making 6 figures out of their college dorms with different kinds of internet products. I saw a thread yesterday from some 19 year old kid who makes $30k a month selling notion templates.
This all is totally possible to do if you're willing to spend 1-2 years learning how to do it. It's even easier to do if you're an engineer (you can rapidly iterate & develop new products)
You have an abundance of FAANG jobs that pay 6 figures and now many of these positions are being offered remotely. You just have to spend 3-4 months learning LeetCode stuff (yes, it's definitely a pain but it 100% beats wasting 2 years on an MBA or something).
Edit:
I'm not talking about everyone in the world. There are definitely billions of people in low-income countries in Africa/Asia who don't have these opportunities unfortunately.
This comment was meant more towards your average HN reader (technical background, living in a rich western nation, etc.) I thought that's who the OP was asking.