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You can think of it this way
For example, if you consider earning 1 satoshi on a 10 BTC balance a good deal and mostly safe irrespective of the losing streak length, then with a balance of 100 BTC and the losing streak of the same length (or keeping the chances of losing the same), you can change the martingale settings in such a way that you earn more than just 1 satoshi at the end of each streak
You can start with a smaller balance, of course, you just need to keep the probabilities of losing that balance the same as with earning 1 satoshi. But what's even more important here, your earnings will be the greater the farther you go along the losing streak before you roll a win. If you ask me, this is a by far better setup to run martingale, which doesn't increase the odds of losing (though it needs a bigger balance)
Yes, I understand, I think of it this way too, sometimes. When you make safe settings for martingale your balance becomes bigger and bigger with time, and you are like "I was immune to 15 losses in a row when I started, and I now I'm immune to 16 losses" etc. Only it takes a really long time period because to be immune to +1 loss, you have to increase your initial balance by 100%. And there is a big chance of hitting a killing losing streak within that period of time
Now we seem to be on the same page and understand each other
Increasing balance in order to lower the odds of busting is the main theme in my Martingale Revisited thread
here (for the inquiring minds). The thing is, if you are already immune to 20+ consecutive losses, you can just stay that way and tweak the martingale settings to earn more with the same level of risk as your winnings pile up. But casinos already know that and they do everything to stop you from exploiting the probabilities in your favor
Further, as I explained in my previous posts here, with this setup it is not like you either bust all or earn just dust. To repeat, there is a lot of in between. The point is, you will necessarily see a lot of variance in your profits before the clock strikes. That would allow you to increment your killing streak faster than you may think and thus postpone your "time of death" moment further into the future