That’s just an engineering problem… Not a particularly hard one either
Wtf would you keep re-encoding it? If you don’t, it’s just binary. You can run error checks on it, save it on raid config with high redundancy, and it’s more stable than any physical media
Load it into memory and you can copy it all you want, do error checking at the destination and you’re golden.
The exception is if you keep uploading it to and ripping it from hosting sites which keep re-encoding/compressing it… But replication itself is easy
All of those (except MSG as far as I know) are definitively bad, the only question is how bad.
The problem is in the US, we’ve basically decided if there’s no acute symptoms or a direct line to a very serious long term illness, we let companies do whatever they want.
It doesn’t flow from science to policy, it mostly flows from public sentiment to policy