In reply to Peter Cralen (@PeterCralen).

I think it's partly when they originally signed up for the account, 5.2/5.3 weren't outdated, or not as badly as they are now. However, they have never had anyone upgrade them to a newer version that their hosting provider actually provides, and has as default version for NEW signups. Maintenance issue, not necessarily that they signed up with a "bad host" in the first place.