That title is a very stupid question ...but pay attention because it is important.
Money made online comes from people who pay for products and services.
Money made online does not come from thin air.
Someone has to pay for something in order for anyone to make money.
And people pay for products and services.

Even Google adsense money paid by Google is paid by advertisers to Google and is paid to you because you have rented part of your blog or website to Google.
You rendered a service to Google.

Many people believe the reason people make money online is the blog, website, forum that they have.

wrong .

These web properties are tools for providing a product or service.

Until you understand this basic concept ,you will concentrate on the wrong things.

summary. people who make money online are providing a product or service.

Every other online business model stems from this basic concept.

There is hardly any business that is 100% online. Money made on like comes from money moved online from offline like from banks and from goods and services. Internet entrepreneurship is a real and thriving business word wide. However, you must beware of scammers if you want to do business online. There are millions of them out there and they are making good money too