It is a liquid canvas for making art itself. And in this virtual world the cyber artist can use digital media to interact with the user. The World Wide Web is a new world, and its artisans are using new tools to create within it. For artists who design their own web sites, the cost is usually minimal. But despite that, some sites don't do well.
Some artists use free sites, but then it gets objectionable when ads pop up.
Another problem is if you get too popular and you have a server capacity that can't handle it. Then too, not everyone likes virtual art galleries. At first they aroused significant opposition in the art community. They wanted everything done traditionally. Another was that potential buyers were leery about spending money on something they could gauge only from their computer monitors.