Is it true only investors lost the money in moneypot but moneypot owners and app owners are in profits?
I'm not so good in understanding the statistics, but from this table, it looks like only investors lost the money and others are in still profit. If it is true, then moneypot is not suitable for investors, right?
Yes, it's true.
The site and the apps make a guaranteed gain every time a bet is placed, even if the bet wins. When a bet wins, not only do the investors have to pay the winner of the bet, but they also have to pay the site and the app owner. You can see that in the screenshot. Comparing the left and right sides you see that while the site profit dropped by just 78.5 BTC, the investor profit dropped by 82.5 BTC. The app owners actually profited by 3 BTC from this large loss, and the site itself profited by a further 1 BTC. The investors made up the difference.
On the other hand, if the apps ever do better than expected then the investors will also do better than expected. The site and the apps take a percentage of the wagered amount, independent of the actual profit. The way things are set up means that when the site performs at less than 70% of expectation the investors take a loss.