Respectfully,
1. Opponent buys a T-34.
2. You are aware of it because it has to vet up to access the ram ability anyway.
3. You either lose your tank by being retarded or you don't.
I am not aware of any maps where infantry cannot fit into areas that tanks can. The absolute only things I can think of as far as death corners go are some of the maps with big walls (that can be crushed by heavy tanks or weaponry), and all of these can be investigated beforehand.
...In much the same way that teller mines can be detected by screening LVs with mine detectors.
That's not counter-play; counter-play is moment-to-moment.
skip to 4:35
As for screening with your infantry; while this is possible, it's not always viable. If your opponent creates an area that is impassable by infantry (i.e. with MGs, AI-vehicles, etc.), the intented counter is supposed to be a vehicle of your own. Which is where the current problem arises.