You are probably correct. I was just parroting what I have seem from the industry. Isn't it common for even big start ups to have decided to go with rubber for

You are probably correct. I was just parroting what I have seem from the industry. Isn't it common for even big start ups to have decided to go with rubber for their foundation? It seems to not be a wise decision, yet many engineers do take this path. And that is why I end up confused on this type of discussion.