A general scenario:
1) A person suffers serious misattunement or neglect or abuse in childhood.
2) They begin working with a therapist who is, or seems to be, attuned psychologically and emotionally.
3) The client becomes habituated to this attunement, and possibly dependent on it.
4) Therapy ends prematurely or abruptly, beyond the control of the client.
5) The client experiences massive dysregulation, similar to that of early childhood.
6) The client is now alone with this.

How often is this actually happening and why is there seemingly no statistical data available?
Why aren't there safeguards in place to avoid this at all costs?
How can the industry claim legitimacy in the face of this?

These are mostly rhetorical questions. Just looking for thoughts from those who understand.