They could be crowdfunded. You could even have a system where only contributors to the crowdfund have a license to use it.

>How is open source going to work when governments start declaring models as munitions?

I mean open source cryptography did win that battle in the end. Even if it's illegal you could host the model weights on i2psnark and crowdfund with monero.

>I mean open source cryptography did win that battle in the end.

And it took a long time and it's something still at risk.

>Even if it's illegal

If your pissing around with munitions laws you might as well go commit all the felonies cause you'll end up in the same prison.