I offer a design and development service to my clients. I also explain their hosting options with them. Either host with Webflow or host externally.
If they keep me on for support the hosting is included in the support fee. If they ever get tired of me they can switch to there own account of go with external hosting. (Keep it cleat that the CMS feature stays with Webflow)
If they host externally I offer to integrate there site with Modx.
If they need e-commerce I offer to integrate the Webflow Design with Shopify. Either a full integration or just he buy buttons, depending on their needs.