Good points. I totally forgot about the whole home inspection process and how ridiculous it tends to be. Even when they aren't in house, you know it will be someone that the realtor has worked with before. It will certainly catch things because it has to demonstrate its value, and those things will be worth at least hundreds of $$s. Unfortunately, it will also offer no real guarantee that those things were worth catching or that other things weren't missed.

You are right, a party trying to fix this will need great funding, large scale, and they can't be someone that will just sell out (ala zillow). With the NAR's ability to block out parties that they don't like, it might not even be practically possible.

Not only everything you mentioned above -- the associations control access to the homes themselves

Yup! Forgot to mention that. In my area, you have to be a member of the local Association & NAR to access the lockboxes.