Site Migrations flow: "Why should you host with us?" section needs tightening

[sixhours]

@fditrapani has a mockup of a tightened/more engaging version of this copy we should implement.

[github-actions[bot]]

OpenAI suggested the following labels for this issue:

• [Feature Group] Site Migration: The issue specifically pertains to the site migration flow, indicating that it relates directly to features that facilitate moving a site to WordPress.com.
• [Feature] Site Migration: Further emphasizes the focus on site migration features, indicating that the 'Why should you host with us?' section is part of this process.
• [Feature] Marketing & Retention Emails: The need to tighten this section suggests a marketing aspect, aiming to improve communication with potential customers about the benefits of hosting.

[fditrapani]

Here's the mockup we discussed during our call: