> I want to see evidence of their rationale so I can put myself in management's shoes.

I think worthwhile evidence would only be available if two things, both questionable, were true:

1. an unbiased sample of companies implementing RTO are willing to disclose their reasons - e.g. make public announcements, or cooperate with academic studies. 2. they were honest about the reasons.

If common reasons for RTO would make the management look bad (and some might even be illegal in some places) then the first is less likely, and the second is highly unlikely.