Sooner or later, someone will figure it out and make a miner for Windows. There are great devs out there. However, just like in real mining there is a limited resource (coins) and the more early you are in the game, the more coins you can collect.

If you wish to be always on the edge, you have to mine specific coins before others. At the moment, Linux is the way to go for AMD + Lira2z. I've lost 3 days setting it up from scratch but it works great and I have no regrets