Maybe you're over-estimating how much universities actually care about ethics and IRB.

I reported my advisor to university admin for gross safety violations, attempting to collect data on human subjects without any IRB oversight at all, falsifying data, and falsifying financial records. He brought his undergrad class into the lab one day and said we should collect data on them, (low hanging fruit!) with machinery that had just started working a few days prior, we hadn't even begun developing basic safety features for it, we hadn't even discussed design of experiments or requesting IRB approval for experiments. We (grad students) cornered the professor as a group and told him that was wildly unacceptable, and he tried it multiple more times before we reported him to university admin. Admin ignored it completely. In the next year, we also reported him for falsifying data in journal papers and falsifying financial records related to research grants. And, oh yeah, assigning Chinese nationals to work on DoD-funded work that explicitly required US citizens and lying to the DoD about it. University completely ignored that too. And then he got tenure. I was in a Top-10-US grad program. So in my experience, as long as the endowment is growing, university admin doesn't care about much else.