Comment by somat

I don't think so, you will always need what tanks bring to the battlefield, it is just that the ratios may shift.

simplified to absurdity it is a sort of rock paper scissors situation.

The most economical way to project force is with infantry. the best defense from infantry are machine guns. The best offense against machine guns are armored vehicles(tanks). the most economical defense from tanks are man portable anti-tank weapons. and we have come full circle, the most economical offense to portable anti-tank weapons are infantry.

So the trick is to have your combat mix to the correct ratio.