A question from the Elementor Facebook group (July 2019).
The idea/USP is that it’s centralised. It doesn’t matter which page builder you use because so many are supported so if you tend to use Divi for some sites and Elementor for others then keeping your layouts together is win.
Also as it stands very few page builders offer the functionality and when they do there will be a charge for it. It’s not an economic business model for any page builder to allow you to use space on their servers for your layouts without you setting up a subscription. As it stands Page Builder Cloud is less than $5 a month and is available right now.
Also many more exciting features coming very soon at no additional charge.