What happens to your site if your website builder shuts down or you want to leave?
Builders are rentals: the design and functionality do not export, only your content does (text, images, products, and your domain, which is always yours to take). Plan for it lightly: keep your domain registered in your own name and your content backed up, and lock-in stops being scary.
The uncomfortable truth of every closed builder, and the fair price of their convenience: a Wix or Squarespace site is not a thing you possess but a service you rent. There is no "download my website" button that produces a working site, because the design is woven into their platform. What you can always take: your domain name (registered to you, transferable in days), your written content and images, product catalogs and customer lists as exports, and at most builders your blog posts in a standard format.
Actual shutdown of a major builder is unlikely and would come with long notice and migration help; the realistic scenario is you outgrowing the platform or disliking a price change. Then the move is a rebuild on the new platform with your exported content, typically days of work for a normal site. WordPress and Webflow sit at the more portable end of the spectrum; the AI and budget builders at the more closed end.
The two-minute insurance policy: register the domain in your own account (not the builder's reseller bundle, or transfer it out later), keep a folder with your source texts, images, and product data, and export anything exportable once a year. Do that, and platform choice becomes a preference instead of a marriage.
