Are you dumb, you don't see anyway that it is possible to make over .1% on average daily.
I know for certain that it's possible with a limited amount of funds, but it doesn't scale to very high sums. With a higher sum of invested money the profits measured in percent will fall. That means it would be stupid for anyone who figures out how to give away the profits to random strangers.
Actually I found that with higher sums I can make some profit (usually >1%) from volume trading some established altcoins on multiple exchanges, in addition it makes possible to diversify my "investments" and make some short-medium term buys on high volume new(ish) coins what just hit the bottom after the initial dump (and supposed to bounce back).
However I agree this can be difficult to manage for one person especially with highly diversified funds across lots of exchanges.