I think the low stance puts me in a position where I don't feel the need to move my foot. Hopefully the image is large enough for you to see. The first picture shows him moving to step on my foot. The other 2 pictures show him standing on my foot. My opponent is still arm's length away from me so I feel no need to move away from him. He is still quite a distance away from being able to land a solid punch. He could land a solid punch if he moves in, but then he'll need to move his foot off my foot, which would allow me to move. The benefit that I have is that I don't need to see him move, I only need to feel the pressure on my foot to lighten to know that I can move. Even if he doesn't move, if that pressure gets lighter then I know that his root on that foot isn't there.
In the picture we were light sparring so he was able to camp out on my foot. In a more serious sparring match the time that he would be able to stay on my foot is much shorter. Everything moves faster when the intensity increases so in that situation he would try to hit me right after stepping on my foot and then he would have just as quickly moved after his punch comes up short. Depending on how much weight he puts on my foot, I may have enough time to land a long fist technique before he moves his foot off mine.
Sometimes I've been able to "pull the carpet" from that foot. If it feels that his foot is trying to take root on my foot then I will pull my foot. The result is that he temporary loses balance.
I think in my case, it's one of those advantages that comes directly from the stance and the counter punch option comes directly from the long fist technique. I'm not sure if there is a translation of this in your system.
That's very kung fu of you. I like that technique better than stepping on the foot as well, because it has a much bigger reward if you complete the other half of that technique and get it right.