Just posting to say that I agree with the parent comment. All my sites have so much additional stuff that I couldn't just rely on somebody else's hosting even if your hosting is going to be fast and use use CDN to cache images. Maybe I want to host on Vecel to integrate their analytics or their other plugins, or I want to host on Github pages to link it to my repo. Or I want to move additional files in there and be able to access them via SSH.

Offering hosting is good, but if I pay for the service not being able to download as html / css feels like being held hostage. Instead, you should be up front about it (your software is a editor) and offer things like auto push of changes to GitHub so that I don't have to manually export.

I have my own small server at home, and a VPS with Hetzner, and like to deploy my code to infra I have control of and can SSH into. Also, I may want to build something for a client and deploy it to their server/cloud, but if I use Repaint then I'm tied to your hosting and beholden to whatever limitations you decide to impose.

Data sovereignty in case repaint isn't around one day.

If you are the only possible host you can set whatever price you want, and the users will either have to pay or lose the site (since it can't be hosted anywhere else). Also, you may go out of business