It's just the way it works, you either pay for it or pay for it with advertisement. But alternatively you can use Google Sites if you have a Google Account. https://sites.google.com/ It's simple, you can edit the pages visually, even you can embed docs and presentations and youtube videos easily, etc. And your page will be available on the https://sites.google.com/view/[YOUR_CHOSEN_PAGE_NAME_GOES_HERE] URL without ads (as far as I know). But I'm not sure about the license, you should read it before you use it (business-related usage).