There are a number of "build your own" website services out there.
Each has it's stengths, some more user friendly than others. But in order for these companies to support millions of such sites they have to simplify them.
This is a nice way of saying they're going to limit the designs of the sites and their functionality.
We recommend Open Source software is software that's freely licensed to all, that anyone can modify and extend.
Using Open Source you're not constrained by the designs or functionality of the million other sites a company runs.
We can make the site look like what you want and have the functionality you need to make your business a success.