I hear what you’re saying, I even share a lot of the sentiment but the geopolitical situation had changed significantly in the past decade. I don’t think there is any reversing of this trend anytime soon unfortunately. There is going to be a lot more of this not less in the coming years.
Let me make another point.
Having access to multiple computer security firms is good, and the services Kaspersky provides do not end with their antivirus software. Security firms regularly publish their work and work with each other.
Perhaps I'm wrong here, but if memory serves, Kaspersky was one of the first firms to detect stuxnet and publish it's structure (I could be wrong here, trust but verify). Using this data, Symantec was able to begin studying the virus as well.
Walling off security research will lead to more parallel research, rather than international collaboration in computer security. Whether or not this is a good or a bad thing is arguable - but I believe international efforts are a net good while the Internet is an international affair.
Who knows, siloing of development might allow creativity and novel solutions in computer security like what happened with the USA/antibiotics and the USSR/phage theory - but I might be coping here.