Sick of Foundry

[daHsu]

I know I take advantage of the FTA on foundry and soldier-rape my opponent, but they do it just as much when I go second. There's almost no way to avoid it, and generally I think Foundry is an extremely unbalanced map for going first vs. going second.

This problem might have been brought up before, so I'm sorry if it has. But until the devs do something about it (if they do something about it), can someone teach my how to counteract the foundry rush? I've tried watching ST replays but for some reason none of the pros rush like my gifted league buddies do.