If you want your nice smart phones you'll just have to accept the environmental destruction that goes along with it. Corporations like Siemens will live through wars and famines and the heat death of the universe, probably. this, and vibrating trees, here .
I've recently read about the idea that civilization advances because of war. My mind isn't made up on that one, but human nature being what it is I suspect that war isn't going away any time soon. The fact that corporations are human creations that can survive war is just something to throw into the mix- yes, they profit, and undoubtedly encourage war thinking, which are bad things. But a corporation, as a thing, an idea, just might be an improvement over the nation-state?
Civilization has advanced because of war, but it could easily achieve more by using a fraction of the resources wasted on warfare on peaceful research. It's just that war is one of the very few things that make imperialist nation states care enough to fund research. That's not an advantage of war, it is an indictment of these nation states.
The r&d budgets for various things increases massively during the war. The same was true for space race as well. I would say it's more of a correlation then a causation. In peaceful times sciences just get shit on.