Could be the opposite result. The large infrasturcture and software development companies also have the hardware to run most of the models. This means the defensive side of the hacker arms race will benefit the defenders. Unless open source, locally hosted, LLMs become more powerful, then the powers that be will likely prevent most hacks that could have been possible in the past. We probably won't be able to have effective hacking groups anymore once this plays out and the systems get patched. The only way to find any exploits will increase in difficulty exponentially with only the more advanced models being able to find them.