Let me put in my zipcode and just pick the one that was on the ballot from the list. For US SENATORS it's even going to be a 50% chance per state.
From their "why," some Congressmembers require a full 9 digit zip code to submit forms.
It's a 100% chance.
Does this have any support on the corporate level? E.g, companies like Mozilla?
What do you mean? I'm sure if asked Mozilla would not be in favor of this bill, but I don't know what you'd expect beyond that. Mozilla doesn't do much lobbying in general, $240000 over their entire history and that only started in 2018 to support net neutrality, and it's hard to see the corporate value for them.
Why would they (not only Mozilla) support this?
Some of them have privacy as a core part of their marketing strategy.