And neither will everyone on the net visit your site everyday. The most obvious difference between the two forms of advertising is that a TV commercial is thrust upon the unwilling TV public, while a commercial website is chosen to be viewed by someone interested in a particular product or service. Again this is true, there are billions of dollars being spent, but in most cases the website owner will only see a very small percentage of that dollar share. That's the bad news, the good news is that in most cases that small percentage is usually quite acceptable to the site owner. In most cases that money more than covers the cost of the building and maintenance of the website along with a profit.
Some web designers try to convince people that a website is like advertising.
After all, everyone knows the value of advertising. But a website is not traditional advertising. In order for a business website to succeed, it becomes necessary to consider the website as an investment which the business must recognize that there are few short term profits to be made. Websites have a definitive lifecycle and need to be carefully nutured into maturity. Initially the site is producing zero revenue, it has few visitors, and is doing nothing for the business.