[Bang584]

While your example makes alot of sense, heads-up S&G's always have one winner, and no rebuy. So if I can get a 2:1 chip advantage on my opponent with a 10 percent edge, I should show a nice profit.

If I was in a rebuy tournament where no one would rebuy except for me, I wouldn't rebuy either. I'd be fattening the prize pool while reducing my ROI. I might still add-on even if no one added on though, but only if the add-on gave me a significant chip advantage. I think the result would still be bigger prize pool, smaller ROI, unless the add-on somehow occurred when we were in the money or very close to it.