[sgbuffett]

Will work as long as he wins BEFORE hitting the maximum bet limit. For some casinos, especially non-VIP areas, there is a maximum bet limit which makes the Martingale strategy not very useful.

I haven't done the maths but i think it's roughly 60-40.

60% he will lose all.
40% he will double and walk out with $2000.

This is still much better than many other forms pf betting.
You do have a 40% chance of winning.