Not always positive - but been doing well every week so far 
Statistically positive
That's why the investment is alway a cool thing in a casino ^^
Btw, I got a question. Is there anything securing the invested funds?
Over the long term the investment will pay off nicely. Short term anything can happen. The next player could max out a bet and win. So then you lose money but it's a short term loss. After a while you will have enough built up to take losses without even losing profit at all. That is when the investment picks up and by that time it is already long term and worth holding on to.
That's right. Statistically you can expect that site profit is 1% of site wagered. It's quite easy to calculate this on paper, it's also there in our FAQ. Imagine this is averaged over all possible universes and scenarios, something mathematicians call "expected value". It can be off from a real-world value, but as long as people keep wagering, yep. Math is definitely on our side.
Cheers,
Ethan