We may find out very soon. If this blows up (and it really should), Gitlab may pull a move similar to their automatic migration utility from when Microsoft acquired GitHub.

For GitLab.com maybe that’s a question, but nobody is going to ban me from my self-hosted service.

Don't mean to sound facetious, but isn't self hosting also technically hosting somewhere ? (Unless you mean actually having access to the physical server where it's running from)

In other words are we just assuming Digital Ocean/Hetzner or wherever one 'self-hosts' is less likely to auto ban you for no reason? I would say yes, but I hope others are atleast considering this aspect when comparing this moving to Gitlab or whatever