I don’t think this is going to result in more open weights models, as I wrote before the Anthropic news, if Mythos-level models are considered risky, China will also not want them to be open. And you can’t build a Mythos-class model without a very regulatable compute footprint
I honestly don't understand the assumption that there will be continued open weights models. At some point, China will regulate release of Mythos-class models or the companies making open weights models will switch to closed.
There will still be open weights, just not frontier.