People enjoy using the internet because it provides access to a wealth of free information.
However, if one is looking for high-quality material and a certain type of knowledge, particularly on a niche subject, this can be more time-consuming and, believe it or not, even impossible.
This is why membership-based websites are gaining traction. They occupy this void. Individuals are willing to pay a monthly, quarterly, or annual subscription price in exchange for access to a single source of high-quality material that satisfies their demands. If you can identify a topic of interest to your audience, you may build a successful membership website that improves your revenue.
Membership websites conceal some or all of their content, making it accessible only to those who have joined and paid for access. The appearance of that stuff is entirely up to you. If you were a professional trainer, you could include video or audio files in your offering. If you are a marketer, you may want to consider offering self-help articles and e-books.
Each of us has a certain area of expertise. Why waste knowledge when you can monetize it by establishing a membership website that requires subscribers to pay a fee to gain access?