I can’t tell you how many times I’ve seen Peter respond to students in the slack channel and thought to myself, “If only I could explain concepts that well one day to my students”.
If you want to make an income teaching CyberSecurity classes yourself: 1/ do your research 2/ build a class 3/ find students (charge them as much as you like) 4/ teach. Don't blame or be jealous of others for taking the risk, doing the investment, and making some money of it.