on exploiting

theory:

To exploit a non-optimal strategy maximally, we have to make extreme adjustments. Even if the mistake we're exploiting isn't extreme.

practice:

Moderate Adjustments:

But if you think they will catch on and fight back more, you might be better of in the long run showing some moderation. 

Your task is then to find a sweet spot that balances your desire to steal a lot with your desire to keep your opponent in a tight state where you can continue to steal a lot.
So on the long run it might be better for you to steal something like 80%, and fold the absolute garbage hands like 83o, 62o, etc. They might be profitable opening hands in isolation, here and now, but if you open 100% of your hands, your profit from stealing on the button might decrease in the long run.