Hello,
I can't understand your example of trading platform. Price will fluctuate, but how it can help me to get a profit?
For example:
I start with 10 of each currency a and b.
Rate changes to 1a = 1.05b
So now I can make a profit with the 5% increase in currency b price.
Next price fluctuation could be
1b = 1.05a
Now we have another profit opportunity with the 5% rise in currency a price
So if the 2 currencies were btc and ETH my stake in both would now be larger and therefore I have more money.
This is what we are creating with the alpha trading platform