The big companies aren't going to move until they get some guidance on where the line between blocking some numbers and systematically blocking numbers deemed t

The big companies aren't going to move until they get some guidance on where the line between blocking some numbers and systematically blocking numbers deemed to be 'abusive' based on the companies own criteria. Of course today you can request specific number be blocked from calling you of course but no one is currently trying that because the dangers of crossing the blurry line can be severe. Your comparison isn't much more useful than 'prosecutorial discretion exists therefore do any crime you want.' Multibillion dollar companies aren't going to just go out and blaze a trail like that. We even see this in the (spurious) comparison to marijuana, the first companies to step out and test the state vs federal divide were small and local and only after those companies figured out some of the issues did we get large and larger companies coming in. (Though they're still all independent arms because of the difficulties accessing banking because of the federal laws still in place!)