Those simple strategies you undermine are enough for you if you work on yourself. I was shocked when I realised someone bought a trading strategy for $3,700...oh my God!

And guess what, it failed him, what a waste!
Do people pay for strategy? All I know that people pay for is trading signals, and I don’t really know people do go to the length of paying for trading strategy. If you know you can’t take your time to learn how to trade, then why going into trading? Take your time to learn how to trade, and discover the best trading strategy that works for them, instead of going around and be looking for signals, or buying other people’s strategies that might not work for them.
We should know that other people’s strategy might not really work for us, if you really want to make money from trading, and you don’t want to learn to do your analysis yourself, then you are not ready to make money from trading, you are definitely going to be losing, because most of this signal providers are fake, and other people’s trading strategy won’t really work for you.