Admittedly I'm not sure how you see 2 Thessalonians making any such point about the church. Nor do I see any division between church and congregation in the NT or any condemnation of the institution of the Church as a business.

I do think many modern churches *function* too much like businesses (overly focused on marketing campaigns, brandong, and numbers of congregants, corporate leadership structure rather than biblically modeled elder board, etc) but that's not the same as saying the institution of the Church or any local church *is* a business.

Correct me if I have misunderstood what you are saying.