To make a lot of money, you have to produce a lot of value for others.
You can produce some value for a LOT of people, or you can produce a LOT of value for a smaller number of people.
Things that are highly desired and uncommon are more valuable.
If people can get what you offer in a lot of places, they will not pay as much because it’s not as valuable.
What do people want?
What do you provide?
What would they really want but haven’t seen (thought of) yet?
Can you provide that?