Before you can start building your home on the web, you need an address for it. Most of the site builders here can register a unique domain for you, and all can give you a web address using the provider's domain, for example, yourname.sitebuilder.com. Some include a custom domain name with their plans, usually requiring a year's commitment. The services also let you use a domain you've acquired from a third-party registrar such as pairNIC, but you usually must pay the site builder for that privilege.
I personally don’t think site builders will ever replace web designers/developers completely. Most site builders are targeted at small businesses and could never meet the demands required for larger businesses with all their complex requirements. I think Shopify plus is the only product trying to take on the larger CMS platforms right now (e.g. Magenta, Demandware) in the eCommerce space
The research for this site is exhaustive and, for the most part, understandable. Some of the detail was a bit over my head, but for those who are seriously seeking the right website builder for their needs, this is an unbeatable resource. I am wondering why WordPress is not mentioned, but perhaps it is not considered a website builder. Congratulations on a job well done, providing valuable information on a subject that often seems too complex to unravel.