With all due respect, that's not an answer, that's just reiteration of the same statement with a "because it would be better". The answer to "why" is a rationale and yours so far is "bad people doing bad things so better somehow force business to make sure their clients are legit and make things transparent", which is a perfectly fine opinion, but devoid of any actual analysis. That's my interpretation, though, and my apologies if it's incorrect and not what you've meant - I don't intend to introduce a strawman here.

I would recommend actually analyzing the pros and cons. What are the benefits for the society, why they're real (not a snake oil/security theatre, where bad actors would be easily able to work around), and why they overweigh the harm from the negatives (e.g. the obvious privacy concerns).