Governments have been trying to thwart crypto for a long time, with limited impact on people who seriously care about security. In the mid-90s, it was illegal

Governments have been trying to thwart crypto for a long time, with limited impact on people who seriously care about security. In the mid-90s, it was illegal to export strong crypto developed in the US outside. So for quite a while programs would come with dummy crypto, and before building you'd download the actual crypto libraries from Finland and link them in instead. Also for a time, RSA had a patent on public key cryptography and enforced it against companies using it (say, for running a secure webserver) unless they used their closed-source library. So using crypto in the US was made difficult, and yet the internet was fine and most people got the crypto they wanted (except, ironically, defense contractors.) Although the new law sucks, everything will probably be fine there too. The Internet is pretty resistant to the sort of damage this law could create.